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您的当前位置：两码中特网站 >> 菜单导航 >> JavaScript实现的极酷导航菜单

JavaScript实现的极酷导航菜单

分类：菜单导航时间：2009-11-26 点击：

关键词：JavaScript|导航菜单|

<html>
<head>
   <title>JavaScript实现的极酷导航菜单 - 两码中特网站 www.lgqxn.cn</title>
</head>
<body link="#33FF33" vlink="#33FF33" alink="#33FF33">
<SCRIPT LANGUAGE="JavaScript">
var JDWMinNS4   = (navigator.appName.indexOf("Netscape") >= 0 && parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var JDWMinNS6   = (navigator.appName.indexOf("Netscape") >= 0 && parseFloat(navigator.appVersion) == 6) ? 1 : 0;
var JDWMinIE4   = (document.all) ? 1 : 0;
var JDWMinIE5   = (JDWMinIE4 && navigator.appVersion.indexOf("5.")  >= 0) ? 1 : 0;
var JDWMinIE55  = (JDWMinIE5 && navigator.appVersion.indexOf("5.5") >= 0) ? 1 : 0;
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function inheritLayer(layer) {
if (JDWMinNS4) layer.visibility = "inherit";
if (JDWMinIE4) layer.style.visibility = "inherit";
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function moveLayerTo(layer, x, y) {
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layer.moveTo(x, y);
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layer.style.left = x;
layer.style.top  = y;
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function moveLayerBy(layer, dx, dy) {
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layer.moveBy(dx, dy);
if (JDWMinIE4) {
layer.style.pixelLeft += dx;
layer.style.pixelTop  += dy;
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function getLeft(layer) {
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layer = layer.offsetParent;
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layer = layer.offsetParent;
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y += layer.offsetTop;
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function getWidth(layer) {
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function getzIndex(layer) {
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function setzIndex(layer, z) {
if (JDWMinNS4)
layer.zIndex = z;
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layer.style.zIndex = z;
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function clipLayer(layer, clipleft, cliptop, clipright, clipbottom) {
if (JDWMinNS4) {
layer.clip.left   = clipleft;
layer.clip.top    = cliptop;
layer.clip.right  = clipright;
layer.clip.bottom = clipbottom;
}
if (JDWMinIE4)
layer.style.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
}
function getClipLeft(layer) {
if (JDWMinNS4)
return layer.clip.left;
if (JDWMinIE4) {
var str =  layer.style.clip;
if (!str)
return 0;
var clip = getIEClipValues(layer.style.clip);
return(clip[3]);
}
return -1;
}
function getClipTop(layer) {
if (JDWMinNS4)
return layer.clip.top;
if (JDWMinIE4) {
var str =  layer.style.clip;
if (!str)
return 0;
var clip = getIEClipValues(layer.style.clip);
return clip[0];
}
return -1;
}
function getClipRight(layer) {
if (JDWMinNS4)
return layer.clip.right;
if (JDWMinIE4) {
var str =  layer.style.clip;
if (!str)
return layer.style.pixelWidth;
var clip = getIEClipValues(layer.style.clip);
return clip[1];
}
return -1;
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function getClipBottom(layer) {
if (JDWMinNS4)
return layer.clip.bottom;
if (JDWMinIE4) {
var str =  layer.style.clip;
if (!str)
return layer.style.pixelHeight;
var clip = getIEClipValues(layer.style.clip);
return clip[2];
}
return -1;
}
function getClipWidth(layer) {
if (JDWMinNS4)
return layer.clip.width;
if (JDWMinIE4) {
var str = layer.style.clip;
if (!str)
return layer.style.pixelWidth;
var clip = getIEClipValues(layer.style.clip);
return clip[1] - clip[3];
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return -1;
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function getClipHeight(layer) {
if (JDWMinNS4)
return layer.clip.height;
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var str =  layer.style.clip;
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return layer.style.pixelHeight;
var clip = getIEClipValues(layer.style.clip);
return clip[2] - clip[0];
}
return -1;
}
function getIEClipValues(str) {
var clip = new Array();
var i;
i = str.indexOf("(");
clip[0] = parseInt(str.substring(i + 1, str.length), 10);
i = str.indexOf(" ", i + 1);
clip[1] = parseInt(str.substring(i + 1, str.length), 10);
i = str.indexOf(" ", i + 1);
clip[2] = parseInt(str.substring(i + 1, str.length), 10);
i = str.indexOf(" ", i + 1);
clip[3] = parseInt(str.substring(i + 1, str.length), 10);
return clip;
}
function scrollLayerTo(layer, x, y, bound) {
var dx = getClipLeft(layer) - x;
var dy = getClipTop(layer) - y;
scrollLayerBy(layer, -dx, -dy, bound);
}
function scrollLayerBy(layer, dx, dy, bound) {
var cl = getClipLeft(layer);
var ct = getClipTop(layer);
var cr = getClipRight(layer);
var cb = getClipBottom(layer);
if (bound) {
if (cl + dx < 0)
dx = -cl;
else if (cr + dx > getWidth(layer))
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dy = -ct;
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dy = getHeight(layer) - cb;
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clipLayer(layer, cl + dx, ct + dy, cr + dx, cb + dy);
moveLayerBy(layer, -dx, -dy);
}
function setBgColor(layer, color) {
if (JDWMinNS4)
layer.bgColor = color;
if (JDWMinIE4)
layer.style.backgroundColor = color;
}
function setBgImage(layer, src) {
if (JDWMinNS4)
layer.background.src = src;
if (JDWMinIE4)
layer.style.backgroundImage = "url(" + src + ")";
}
function getLayer(name) {
if (JDWMinNS4)
return findLayer(name, document);
if (JDWMinIE4)
return eval('document.all.' + name);
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}
function findLayer(name, doc) {
var i, layer;
for (i = 0; i < doc.layers.length; i++) {
layer = doc.layers[i];
if (layer.name == name)
return layer;
if (layer.document.layers.length > 0)
if ((layer = findLayer(name, layer.document)) != null)
return layer;
}
return null;
}
function getImage(name) {
if (JDWMinNS4) {
return findImage(name, document);
}
if (JDWMinIE4)
return eval('document.all.' + name);
return null;
}
function findImage(name, doc) {
var i, img;
for (i = 0; i < doc.images.length; i++)
if (doc.images[i].name == name)
return doc.images[i];
for (i = 0; i < doc.layers.length; i++)
if ((img = findImage(name, doc.layers[i].document)) != null) {
img.container = doc.layers[i];
return img;
}
return null;
}
function getImagePageLeft(img) {
var x, obj;
if (JDWMinNS4) {
if (img.container != null)
return img.container.pageX + img.x;
else
return img.x;
}
if (JDWMinIE4) {
x = 0;
obj = img;
while (obj.offsetParent != null) {
x += obj.offsetLeft;
obj = obj.offsetParent;
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x += obj.offsetLeft;
return x;
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return -1;
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function getImagePageTop(img) {
var y, obj;
if (JDWMinNS4) {
if (img.container != null)
return img.container.pageY + img.y;
else
return img.y;
}
if (JDWMinIE4) {
y = 0;
obj = img;
while (obj.offsetParent != null) {
y += obj.offsetTop;
obj = obj.offsetParent;
}
y += obj.offsetTop;
return y;
}
return -1;
}
function getWindowWidth() {
if (JDWMinNS4)
return window.innerWidth;
if (JDWMinIE4)
return document.body.clientWidth;
return -1;
}
function getWindowHeight() {
if (JDWMinNS4)
return window.innerHeight;
if (JDWMinIE4)
return document.body.clientHeight;
return -1;
}
function getPageWidth() {
if (JDWMinNS4)
return document.width;
if (JDWMinIE4)
return document.body.scrollWidth;
return -1;
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function getPageHeight() {
if (JDWMinNS4)
return document.height;
if (JDWMinIE4)
return document.body.scrollHeight;
return -1;
}
function getPageScrollX() {
if (JDWMinNS4)
return window.pageXOffset;
if (JDWMinIE4)
return document.body.scrollLeft;
return -1;
}
function getPageScrollY() {
if (JDWMinNS4)
return window.pageYOffset;
if (JDWMinIE4)
return document.body.scrollTop;
return -1;
}
// dhtml Funcs End.
// bug with IE 5.5.
var JDWITEMs = new Array();    // Used to track all navigation bars.
/*ITEM constructor.*/
function ITEM(text, link) {
this.text = text;    // Item text.
this.link = link;    // Link URL or JavaScript code.
}
/*ECSmenu constructor.*/
function ECSmenu(hdrWidth, menuWidth) {
this.hdrWidth  = hdrWidth;
this.width     = menuWidth;
this.height    = 0;
this.items = new Array();
// Define methods.
this.addItem = ECSmenuaddItem;
}
// ECSmenu methods.
function ECSmenuaddItem(item) {
this.items[this.items.length] = item;
}
// JDWITEM constructor.
function JDWITEM(width) {
this.x = 0;
this.y = 0;
this.width  = width;
this.height = 0;
this.align    = "left";
this.minWidth = 0;
this.inverted = false;
this.menus = new Array();
this.created = false;
// Set default sizes.
this.border    = 2;
this.padding   = 4;
this.separator = 1;
// Set default colors.
this.borderColor  = "#000000";
this.hdrFgColor   = "#000000";
this.hdrBgColor   = "#999999";
this.hdrHiFgColor = "#ffffff";
this.hdrHiBgColor = "#666666";
this.itmFgColor   = "#000000";
this.itmBgColor   = "#cccccc";
this.itmHiFgColor = "#ffffff";
this.itmHiBgColor = "#000080";
// Set default fonts.
this.hdrFontFamily = "Arial,Helvetica,sans-serif";
this.hdrFontStyle  = "plain";
this.hdrFontWeight = "bold";
this.hdrFontSize   = "10pt";
this.itmFontFamily = "MS Sans Serif,Arial,Helvetica,sans-serif";
this.itmFontStyle  = "plain";
this.itmFontWeight = "bold";
this.itmFontSize   = "8pt";
// Define methods.
this.setSizes    = JDWITEMSetSizes;
this.setColors   = JDWITEMSetColors;
this.setFonts    = JDWITEMSetFonts;
this.addNAVm     = JDWITEMaddNAVm;
this.create      = JDWITEMCreate;
this.hide        = JDWITEMHide;
this.show        = JDWITEMShow;
this.moveTo      = JDWITEMMoveTo;
this.moveBy      = JDWITEMMoveBy;
this.getzIndex   = JDWITEMGetzIndex;
this.setzIndex   = JDWITEMSetzIndex;
this.getWidth    = JDWITEMGetWidth;
this.getMinWidth = JDWITEMGetMinWidth;
this.getAlign    = JDWITEMGetAlign;
this.setAlign    = JDWITEMSetAlign;
this.resize      = JDWITEMResize;
this.invert      = JDWITEMInvert;
this.isInverted  = JDWITEMIsInverted;
// Add to the list.
this.index = JDWITEMs.length;
JDWITEMs[this.index] = this;
}
function JDWITEMSetSizes(border, padding, separator) {
if (!this.created) {
this.border = border;
this.padding = padding;
this.separator = separator;
   }
}
function JDWITEMSetColors(bdColor,
hdrFgColor, hdrBgColor, hdrHiFgColor, hdrHiBgColor,
itmFgColor, itmBgColor, itmHiFgColor, itmHiBgColor) {
if (!this.created) {
this.borderColor  = bdColor;
this.hdrFgColor   = hdrFgColor;
this.hdrBgColor   = hdrBgColor;
this.hdrHiFgColor = hdrHiFgColor;
this.hdrHiBgColor = hdrHiBgColor;
this.itmFgColor   = itmFgColor;
this.itmBgColor   = itmBgColor;
this.itmHiFgColor = itmHiFgColor;
this.itmHiBgColor = itmHiBgColor;
   }
}
function JDWITEMSetFonts(hdrFamily, hdrStyle, hdrWeight, hdrSize,
itmFamily, itmStyle, itmWeight, itmSize) {
if (!this.created) {
this.hdrFontFamily = hdrFamily;
this.hdrFontStyle  = hdrStyle;
this.hdrFontWeight = hdrWeight;
this.hdrFontSize   = hdrSize;
this.itmFontFamily = itmFamily;
this.itmFontStyle  = itmStyle;
this.itmFontWeight = itmWeight;
this.itmFontSize   = itmSize;
   }
}
function JDWITEMaddNAVm(menu) {
if (!this.created)
this.menus[this.menus.length] = menu;
}
function JDWITEMCreate() {
var str;
var i, j;
var norm, high, end;
var width, height;
var x, y;
var scrX, scrY;
if (this.created || (!JDWMinNS4 && !JDWMinIE4))
return;
// Build HTML for filler and header layers.
str = "";
// For IE4, need to scroll to end of page before inserting HTML.
if (JDWMinIE4 && !JDWMinIE5) {
scrX = getPageScrollX();
scrY = getPageScrollY();
window.scrollTo(getPageWidth(), getPageHeight());
}
if (JDWMinNS4)
str += '<layer name="JDWITEM' + this.index + '_filler"></layer>\n'
+  '<layer name="JDWITEM' + this.index + '_hdrsBase">\n';
if (JDWMinIE4)
str += '<div id="JDWITEM' + this.index + '_filler"'
+  ' style="position:absolute;">'
+  '</div>\n'
+  '<div id="JDWITEM' + this.index + '_hdrsBase"'
+  ' style="position:absolute;">\n';
// Build HTML for the headers.
for (i = 0; i < this.menus.length; i++) {
norm = '<table border=0 cellpadding=' + this.padding
+ ' cellspacing=0'
+ (this.menus[i].hdrWidth > 0 ? ' width=' + this.menus[i].hdrWidth : '')
+ ((JDWMinIE4 && !JDWMinIE5) ? ' id="JDWITEM' + this.index + '_tbl' + i + '"': '')
+ '><tr><td'
+ (this.menus[i].hdrWidth == 0 ? ' nowrap=1' + this.menus[i].hdrWidth : '')
+ '>'
+ '<span style="color:' + this.hdrFgColor + ';'
+ 'font-family:' + this.hdrFontFamily + ';'
+ 'font-size:' + this.hdrFontSize + ';'
+ 'font-style:' + this.hdrFontStyle + ';'
+ 'font-weight:' + this.hdrFontWeight + ';">';
high = '<table border=0 cellpadding=' + this.padding
+ ' cellspacing=0'
+ (this.menus[i].hdrWidth > 0 ? ' width=' + this.menus[i].hdrWidth : '')
+ '><tr><td'
+ (this.menus[i].hdrWidth == 0 ? ' nowrap=1' + this.menus[i].hdrWidth : '')
+ '>'
+ '<span style="color:' + this.hdrHiFgColor + ';'
+ 'font-family:' + this.hdrFontFamily + ';'
+ 'font-size:' + this.hdrFontSize + ';'
+ 'font-style:' + this.hdrFontStyle + ';'
+ 'font-weight:' + this.hdrFontWeight + ';">';
end  = '</span></td></tr></table>';
if (JDWMinNS4)
str += '<layer name="JDWITEM' + this.index + '_head' + i + '">'
+  norm + this.menus[i].items[0].text + end
+  '</layer>\n'
+  '<layer name="JDWITEM' + this.index + '_headHigh' + i + '">'
+  high + this.menus[i].items[0].text + end
+  '</layer>\n'
+  '<layer name="JDWITEM' + this.index + '_headDummy' + i + '">'
+  '</layer>\n';
if (JDWMinIE4) {
str += '<div id="JDWITEM' + this.index + '_head' + i + '"'
+  ' style="position:absolute;">'
+  norm + this.menus[i].items[0].text + end
+  '</div>\n'
+  '<div id="JDWITEM' + this.index + '_headHigh' + i + '"'
+  ' style="position:absolute;">'
+  high + this.menus[i].items[0].text + end
+  '</div>\n'
+  '<div id="JDWITEM' + this.index + '_headDummy' + i + '"'
+  ' style="position:absolute;">';
if (JDWMinIE55)
str += '<table cellspacing=0 width="100%" height="100%"><tr><td> </td></tr></table>';
str += '</div>\n';
   }
}
if (JDWMinNS4) {
str += '</layer>\n';
this.baseLayer = new Layer(this.width);
this.baseLayer.document.open();
this.baseLayer.document.write(str);
this.baseLayer.document.close();
}
if (JDWMinIE4) {
str += '</div>\n';
str = '<div id="JDWITEM' + this.index + '"'
+ ' style="position:absolute;left:0px;top:0px;">\n'
+ str
+ '</div>\n';
document.body.insertAdjacentHTML("beforeEnd", str);
this.baseLayer = getLayer("JDWITEM" + this.index);
}
// Position and G6JDWinitialize each header.
width = 0;
height = 0;
for (i = 0; i < this.menus.length; i++) {
this.menus[i].hdrNormLayer = getLayer('JDWITEM' + this.index + '_head' + i);
this.menus[i].hdrHighLayer = getLayer('JDWITEM' + this.index + '_headHigh' + i);
this.menus[i].hdrDmmyLayer = getLayer('JDWITEM' + this.index + '_headDummy' + i);
height = Math.max(height, getHeight(this.menus[i].hdrNormLayer));
this.height = height + 2 * this.border;
// Fix for IE4 to resize headers to fit text width.
if (JDWMinIE4 && !JDWMinIE5) {
width = this.menus[i].hdrWidth;
if (width == 0)
width = eval('document.all.JDWITEM' + this.index + '_tbl' + i + '.clientWidth');
JDWITEMIEResizeLayer(this.menus[i].hdrNormLayer, width, height);
JDWITEMIEResizeLayer(this.menus[i].hdrHighLayer, width, height);
JDWITEMIEResizeLayer(this.menus[i].hdrDmmyLayer, width, height);
   }
}
x = this.border;
y = this.border;
for (i = 0; i < this.menus.length; i++) {
width = Math.max(this.menus[i].hdrWidth, getWidth(this.menus[i].hdrNormLayer));
if (this.menus[i].width == 0)
this.menus[i].width = width + 2 * this.border;
moveLayerTo(this.menus[i].hdrNormLayer, x, y);
setBgColor(this.menus[i].hdrNormLayer, this.hdrBgColor);
clipLayer(this.menus[i].hdrNormLayer, 0, 0, width, height);
inheritLayer(this.menus[i].hdrNormLayer);
moveLayerTo(this.menus[i].hdrHighLayer, x, y);
setBgColor(this.menus[i].hdrHighLayer, this.hdrHiBgColor);
clipLayer(this.menus[i].hdrHighLayer, 0, 0, width, height);
hideLayer(this.menus[i].hdrHighLayer);
moveLayerTo(this.menus[i].hdrDmmyLayer, x, y);
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.menus[i].hdrDmmyLayer, width, height);
clipLayer(this.menus[i].hdrDmmyLayer, 0, 0, width, height);
inheritLayer(this.menus[i].hdrDmmyLayer);
this.menus[i].hdrDmmyLayer.highLayer = this.menus[i].hdrHighLayer;
this.menus[i].hdrLeft = x;
x += width + this.border;
this.menus[i].hdrRight = x;
}
// Save resulting width of headers and total width.
this.minWidth = x;
this.width = Math.max(this.minWidth, this.width);
// Position and G6JDWinitialize base, filler and headers base layers.
moveLayerTo(this.baseLayer, this.x, this.y);
setBgColor(this.baseLayer, this.borderColor);
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.baseLayer, this.width, this.height);
clipLayer(this.baseLayer, 0, 0, this.width, this.height);
this.fillerLayer = getLayer('JDWITEM' + this.index + '_filler');
moveLayerTo(this.fillerLayer, this.border, this.border);
setBgColor(this.fillerLayer, this.hdrBgColor);
width = this.width - 2 * this.border;
height = this.height - 2 * this.border;
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.fillerLayer, width, height);
clipLayer(this.fillerLayer, 0, 0, width, height);
inheritLayer(this.fillerLayer);
this.hdrsBaseLayer = getLayer('JDWITEM' + this.index + '_hdrsBase');
if (this.align == "left")
this.hdrsOffsetX = 0;
else if (this.align == "center")
this.hdrsOffsetX = Math.round((this.width - this.minWidth) / 2);
else if (this.align == "right")
this.hdrsOffsetX = this.width - this.minWidth;
else
this.hdrsOffsetX = Math.min(parseInt(this.align, 10), this.width - this.minWidth);
moveLayerTo(this.hdrsBaseLayer, this.hdrsOffsetX, 0);
setBgColor(this.hdrsBaseLayer, this.borderColor);
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.hdrsBaseLayer, this.minWidth, this.height);
clipLayer(this.hdrsBaseLayer, 0, 0, this.minWidth, this.height);
inheritLayer(this.hdrsBaseLayer);
// Set up event handling and positioning for headers.
for (i = 0; i < this.menus.length; i++) {
this.menus[i].hdrDmmyLayer.index = this.index;
this.menus[i].hdrDmmyLayer.offsetX = this.menus[i].hdrLeft - this.border;
if (this.menus[i].hdrDmmyLayer.offsetX + this.menus[i].width > this.width)
this.menus[i].hdrDmmyLayer.offsetX = this.menus[i].hdrRight - this.menus[i].width;
this.menus[i].hdrDmmyLayer.offsetY = this.height - this.border;
this.menus[i].hdrDmmyLayer.onmouseover = JDWITEMHeaderOn;
this.menus[i].hdrDmmyLayer.onmouseout = JDWITEMHeaderOff;
if (JDWMinNS4) {
this.menus[i].hdrDmmyLayer.document.highLayer = this.menus[i].hdrHighLayer;
this.menus[i].hdrDmmyLayer.document.link = this.menus[i].items[0].link;
this.menus[i].hdrDmmyLayer.document.captureEvents(Event.MOUSEUP);
this.menus[i].hdrDmmyLayer.document.onmouseup = JDWITEMItemClick;
}
if (JDWMinIE4) {
this.menus[i].hdrDmmyLayer.highLayer = this.menus[i].hdrHighLayer;
this.menus[i].hdrDmmyLayer.link = this.menus[i].items[0].link;
this.menus[i].hdrDmmyLayer.onclick = JDWITEMItemClick;
   }
}
// Build the drop down menus.
norm = '<table border=0 cellpadding=' + this.padding
+ ' cellspacing=0 width="100%"><tr><td>'
+ '<span style="color:' + this.itmFgColor + ';'
+ 'font-family:' + this.itmFontFamily + ';'
+ 'font-size:' + this.itmFontSize + ';'
+ 'font-style:' + this.itmFontStyle + ';'
+ 'font-weight:' + this.itmFontWeight + ';">';
high = '<table border=0 cellpadding=' + this.padding
+ ' cellspacing=0 width="100%"><tr><td>'
+ '<span style="color:' + this.itmHiFgColor + ';'
+ 'font-family:' + this.itmFontFamily + ';'
+ 'font-size:' + this.itmFontSize + ';'
+ 'font-style:' + this.itmFontStyle + ';'
+ 'font-weight:' + this.itmFontWeight + ';">';
end  = '</span></td></tr></table>';
for (i = 0; i < this.menus.length; i++) {
width = this.menus[i].width - 2 * this.border;
str = "";
for (j = 1; j < this.menus[i].items.length; j++) {
if (JDWMinNS4)
str += '<layer name="JDWITEM' + this.index + '_menu' + i + '_norm' + j + '"'
+  ' width=' + width + '>'
+  norm + this.menus[i].items[j].text + end
+  '</layer>\n'
+  '<layer name="JDWITEM' + this.index + '_menu' + i + '_high' + j + '"'
+  ' width=' + width + '>'
+  high + this.menus[i].items[j].text + end
+  '</layer>\n'
+  '<layer name="JDWITEM' + this.index + '_menu' + i + '_dmmy' + j + '"'
+  ' width=' + width + '>'
+  '</layer>\n';
if (JDWMinIE4) {
str += '<div id="JDWITEM' + this.index + '_menu' + i + '_norm' + j + '"'
+  ' style="position:absolute;width:' + width + 'px;">'
+  norm + this.menus[i].items[j].text + end
+  '</div>\n'
+  '<div id="JDWITEM' + this.index + '_menu' + i + '_high' + j + '"'
+  ' style="position:absolute;width:' + width + 'px;">'
+  high + this.menus[i].items[j].text + end
+  '</div>\n'
+  '<div id="JDWITEM' + this.index + '_menu' + i + '_dmmy' + j + '"'
+  ' style="position:absolute;width:' + width + 'px;">';
if (JDWMinIE55)
str += '<table cellspacing=0 width="100%" height="100%"><tr><td> </td></tr></table>';
str += '</div>\n';
   }
}
if (JDWMinNS4) {
this.menus[i].baseLayer = new Layer(this.menus[i].width);
this.menus[i].baseLayer.document.open();
this.menus[i].baseLayer.document.write(str);
this.menus[i].baseLayer.document.close();
}
if (JDWMinIE4) {
str = '<div id="JDWITEM' + this.index + '_menu' + i + '"'
+ ' style="position:absolute;left:0px; top:0px;'
+ 'width:' + this.menus[i].width + 'px;visibility:hidden;">\n'
+ str
+ '</div>\n';
document.body.insertAdjacentHTML("beforeEnd", str);
this.menus[i].baseLayer = getLayer("JDWITEM" + this.index + "_menu" + i);
   }
}
// Restore original scroll position in IE4.
if (JDWMinIE4 && !JDWMinIE5)
window.scrollTo(x, y);
// Position and G6JDWinitialize each menu.
for (i = 0; i < this.menus.length; i++) {
moveLayerTo(this.menus[i].baseLayer, this.menus[i].hdrDmmyLayer.offsetX, this.menus[i].hdrDmmyLayer.offsetY);
setBgColor(this.menus[i].baseLayer, this.borderColor);
if (this.menus[i].items.length > 1) {
this.menus[i].hdrDmmyLayer.menuLayer = this.menus[i].baseLayer;
if (JDWMinNS4)
this.menus[i].hdrDmmyLayer.document.menuLayer = this.menus[i].baseLayer;
}
else {
this.menus[i].hdrDmmyLayer.menuLayer = null;
if (JDWMinNS4)
this.menus[i].hdrDmmyLayer.document.menuLayer = this.menus[i].baseLayer;
}
// Position and G6JDWinitialize each item in the menu.
x = this.border;
y = this.border;
width = this.menus[i].width - 2 * this.border;
for (j = 1; j < this.menus[i].items.length; j++) {
this.menus[i].items[j].normLayer = getLayer('JDWITEM' + this.index + '_menu' + i + '_norm' + j);
this.menus[i].items[j].highLayer = getLayer('JDWITEM' + this.index + '_menu' + i + '_high' + j);
this.menus[i].items[j].dmmyLayer = getLayer('JDWITEM' + this.index + '_menu' + i + '_dmmy' + j);
height = getHeight(this.menus[i].items[j].normLayer);
moveLayerTo(this.menus[i].items[j].normLayer, x, y);
setBgColor(this.menus[i].items[j].normLayer, this.itmBgColor);
clipLayer(this.menus[i].items[j].normLayer, 0, 0, width, height);
inheritLayer(this.menus[i].items[j].normLayer);
moveLayerTo(this.menus[i].items[j].highLayer, x, y);
setBgColor(this.menus[i].items[j].highLayer, this.itmHiBgColor);
clipLayer(this.menus[i].items[j].highLayer, 0, 0, width, height);
hideLayer(this.menus[i].items[j].highLayer);
moveLayerTo(this.menus[i].items[j].dmmyLayer, x, y);
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.menus[i].items[j].dmmyLayer, width, height);
clipLayer(this.menus[i].items[j].dmmyLayer, 0, 0, width, height);
inheritLayer(this.menus[i].items[j].dmmyLayer);
this.menus[i].items[j].dmmyLayer.highLayer = this.menus[i].items[j].highLayer;
this.menus[i].items[j].dmmyLayer.onmouseover = JDWITEMItemOn;
this.menus[i].items[j].dmmyLayer.onmouseout = JDWITEMItemOff;
if (JDWMinNS4) {
this.menus[i].items[j].dmmyLayer.document.highLayer = this.menus[i].items[j].highLayer;
this.menus[i].items[j].dmmyLayer.document.parentHighLayer = this.menus[i].hdrHighLayer;
this.menus[i].items[j].dmmyLayer.document.menuLayer = this.menus[i].baseLayer;
this.menus[i].items[j].dmmyLayer.document.link = this.menus[i].items[j].link;
this.menus[i].items[j].dmmyLayer.document.captureEvents(Event.MOUSEUP);
this.menus[i].items[j].dmmyLayer.document.onmouseup = JDWITEMItemClick;
}
if (JDWMinIE4) {
this.menus[i].items[j].dmmyLayer.highLayer = this.menus[i].items[j].highLayer;
this.menus[i].items[j].dmmyLayer.parentHighLayer = this.menus[i].hdrHighLayer;
this.menus[i].items[j].dmmyLayer.menuLayer = this.menus[i].baseLayer;
this.menus[i].items[j].dmmyLayer.link = this.menus[i].items[j].link;
this.menus[i].items[j].dmmyLayer.onclick = JDWITEMItemClick;
}
y += height + this.separator;
}
width = this.menus[i].width;
height = y - this.separator + this.border;
this.menus[i].baseLayer.width = this.menus[i].width;
this.menus[i].baseLayer.height = height;
if (JDWMinIE4)
JDWITEMIEResizeLayer(this.menus[i].baseLayer, width, height);
clipLayer(this.menus[i].baseLayer, 0, 0, width, height);
this.menus[i].baseLayer.parentHighLayer = this.menus[i].hdrHighLayer;
this.menus[i].baseLayer.onmouseout = ECSmenuOff;
}
this.created = true;
this.resize(this.width);
showLayer(this.baseLayer);
}
function JDWITEMHide() {
if (this.created)
hideLayer(this.baseLayer);
}
function JDWITEMShow() {
if (this.created)
showLayer(this.baseLayer);
}
function JDWITEMMoveTo(x, y) {
this.x = x;
this.y = y;
if (this.created)
moveLayerTo(this.baseLayer, this.x, this.y);
}
function JDWITEMMoveBy(dx, dy) {
this.x += dx;
this.y += dy;
if (this.created)
moveLayerTo(this.baseLayer, this.x, this.y);
}
function JDWITEMGetzIndex() {
if (this.created)
return getzIndex(this.baseLayer);
return 0;
}
function JDWITEMSetzIndex(z) {
var i;
if (this.created) {
setzIndex(this.baseLayer, z);
for (i = 0; i < this.menus.length; i++)
setzIndex(this.menus[i].baseLayer, z);
   }
}
function JDWITEMGetWidth() {
return this.width;
}
function JDWITEMGetMinWidth() {
return this.minWidth;
}
function JDWITEMGetAlign() {
return this.align;
}
function JDWITEMSetAlign(align) {
this.align = align;
if (this.created)
this.resize(this.width);
}
function JDWITEMResize(width) {
if (this.created) {
this.width = Math.max(width, this.minWidth);
if (JDWMinIE4) {
JDWITEMIEResizeLayer(this.fillerLayer, this.width - 2 * this.border, this.height - 2 * this.border);
JDWITEMIEResizeLayer(this.baseLayer, this.width, this.height);
}
clipLayer(this.fillerLayer, 0, 0, this.width - 2 * this.border, this.height - 2 * this.border);
clipLayer(this.baseLayer, 0, 0, this.width, this.height);
if (this.align == "left")
this.hdrsOffsetX = 0;
else if (this.align == "center")
this.hdrsOffsetX = Math.round((this.width - this.minWidth) / 2);
else if (this.align == "right")
this.hdrsOffsetX = this.width - this.minWidth;
else
this.hdrsOffsetX = Math.min(parseInt(this.align, 10), this.width - this.minWidth);
moveLayerTo(this.hdrsBaseLayer, this.hdrsOffsetX, 0);
for (i = 0; i < this.menus.length; i++) {
this.menus[i].hdrDmmyLayer.offsetX = this.menus[i].hdrLeft - this.border;
if (this.hdrsOffsetX + this.menus[i].hdrDmmyLayer.offsetX + this.menus[i].width > this.width)
this.menus[i].hdrDmmyLayer.offsetX = this.menus[i].hdrRight - this.menus[i].width;
   }
}
else
this.width = width;
}
function JDWITEMInvert() {
this.inverted = !this.inverted;
}
function JDWITEMIsInverted() {
return this.inverted;
}
// Layer resize function for IE.
function JDWITEMIEResizeLayer(layer, width, height) {
layer.style.pixelWidth = width;
layer.style.pixelHeight = height;
}
// Event handlers for the navigation bar.
function JDWITEMHeaderOn(e) {
var bar;
var x, y;
bar = JDWITEMs[this.index];
// Position drop down menu.
if (this.menuLayer != null) {
x = bar.x + bar.hdrsOffsetX + this.offsetX;
y = bar.y + this.offsetY;
if (bar.inverted)
y = bar.y - this.menuLayer.height + bar.border;
moveLayerTo(this.menuLayer, x, y);
// Save drop down menu position and show it.
this.menuLayer.left = getPageLeft(this.menuLayer);
this.menuLayer.top = getPageTop(this.menuLayer);
this.menuLayer.right = this.menuLayer.left + this.menuLayer.width + 1;
this.menuLayer.bottom = this.menuLayer.top + this.menuLayer.height + 1;
}
// Hide any currently active header and drop down.
if (JDWMinIE4) {
if (bar.activeHeader != null && bar.activeHeader != this) {
hideLayer(bar.activeHeader.highLayer);
if (bar.activeHeader.menuLayer != null)
hideLayer(bar.activeHeader.menuLayer);
}
bar.activeHeader = this;
}
// Display the header highlight layer and drop down menu.
showLayer(this.highLayer);
if (this.menuLayer != null)
showLayer(this.menuLayer);
}
function JDWITEMHeaderOff(e) {
// If over drop down menu, exit. Otherwise hide menu and highlight layers.
if (this.menuLayer != null) {
if (JDWMinIE4) {
mouseX = window.event.clientX + document.body.scrollLeft;
mouseY = window.event.clientY + document.body.scrollTop;
}
if (mouseX >= this.menuLayer.left  &&
mouseX <= this.menuLayer.right &&
mouseY >= this.menuLayer.top   &&
mouseY <= this.menuLayer.bottom)
return;
hideLayer(this.menuLayer);
}
hideLayer(this.highLayer);
}
function ECSmenuOff(e) {
// If over header, exit.
if (JDWMinIE4) {
mouseX = window.event.clientX + document.body.scrollLeft;
mouseY = window.event.clientY + document.body.scrollTop;
if (mouseX >= this.left  &&
mouseX <= this.right &&
mouseY >= this.top   &&
mouseY <= this.bottom)
return;
}
// Otherwise, hide menu and header highlight layers.
hideLayer(this);
hideLayer(this.parentHighLayer);
}
function JDWITEMItemOn() {
showLayer(this.highLayer);
}
function JDWITEMItemOff() {
hideLayer(this.highLayer);
}
function JDWITEMItemClick(e) {
// If there is no link, exit.
if (this.link == "")
return true;
// Hide the drop down menu and highlight layer.
if (this.menuLayer != null) {
hideLayer(this.menuLayer);
}
if (this.parentHighLayer != null) {
hideLayer(this.parentHighLayer);
}
hideLayer(this.highLayer);
// If the link starts with "javascript:" execute the code. Otherwise just
// link to the URL.
if (this.link.indexOf("javascript:") == 0)
eval(this.link);
else
window.location.href = this.link;
return true;
}
// MOUSE TRACKING
// These variables will hold the current mouse pointer position.
var mouseX = 0;
var mouseY = 0;
// Set up event capturing.
if (JDWMinNS4)
document.captureEvents(Event.MOUSEMOVE);
document.onmousemove = JDWITEMGetMousePosition;
function JDWITEMGetMousePosition(e) {
// Save mouse pointer position.
if (JDWMinNS4) {
mouseX = e.pageX;
mouseY = e.pageY;
}
if (JDWMinIE4) {
mouseX = window.event.clientX + document.body.scrollLeft;
mouseY = window.event.clientY + document.body.scrollTop;
   }
}
// EVENT: Window Resizing
// These variables are used to determine if a resize event is a true one in
// older releases of NS4.
var origWidth;
var origHeight;
// Reload page in case of a browser resize.
if (JDWMinNS4) {
origWidth  = window.innerWidth;
origHeight = window.innerHeight;
}
window.onresize = JDWITEMReload;
function JDWITEMReload() {
if (JDWMinNS4 && origWidth == window.innerWidth && origHeight == window.innerHeight)
return;
// For IE, reload on a timer in case the Windows 'Show window contents while
// dragging' display option is on.
if (JDWMinIE4)
setTimeout('window.location.href = window.location.href', 2000);
else
window.location.href = window.location.href;
}
function G6JDWinit()
{
fullWidth = getWindowWidth() - (JDWMinNS4 && getWindowHeight() < getPageHeight() ? 16 : 0);
JDWBAR1.create();
JDWBAR1.moveTo(0,-getWindowHeight()+43);
JDWBAR1.setzIndex(1);
JDWBAR1.resize(fullWidth);
JDWBAR1.setAlign(getWindowWidth()+60);
JDWBAR1.hide();JDWBAR2.create();
JDWBAR2.moveBy(0,-getWindowHeight()+17);
JDWBAR2.resize(fullWidth);
JDWBAR2.setzIndex(2);
NAVupdatePOSY();
}
/* Fire It Up!! */
window.onload=G6JDWinit;
function NAVupdatePOSY() {
var viewTop;
var viewBottom;
var dy;
viewTop = getPageScrollY();
viewBottom = viewTop + getWindowHeight();
dy = Math.round(Math.abs(viewTop - JDWBAR1.y)); /* NO ANIM */
if (viewTop < JDWBAR1.y) dy = -dy;
dy = Math.round(Math.abs(viewTop - JDWBAR2.y)); /* NO ANIM */
if (viewTop < JDWBAR2.y) dy = -dy;
if (JDWBAR1.bottom < viewTop) 
JDWBAR1.moveTo(0, viewTop - JDWBAR1.height);
if (JDWBAR1.top > viewBottom) 
JDWBAR1.moveTo(0, viewBottom);
if (JDWBAR2.bottom < viewTop) 
JDWBAR2.moveTo(0, viewTop - JDWBAR2.height);
if (JDWBAR2.top > viewBottom) 
JDWBAR2.moveTo(0, viewBottom);
JDWBAR1.moveBy(0, dy);
JDWBAR2.moveBy(0, dy);
setTimeout('NAVupdatePOSY()', 0); /* INFINITLY SMALL VALUE */
}
/*************
This Is a Function To Maximize The Window in MSIE and NS. When Called, The Window Will Maximize.
*************/
function maximizeWin() {
if (window.screen) {
var aw = screen.availWidth;
var ah = screen.availHeight;
window.moveTo(0, 0);
window.resizeTo(aw, ah);
   }
}

/*
MENU ITEMS:
(Border col, menu title col, top menu BGcolor, 
title selected font col, main sel bgcol, dd font 
col, ddbgc, ddfont sel col, dd sel bgcol,
*/  

// ___________________________________
var JDWBAR2 = new JDWITEM(0); 
JDWBAR2.setSizes   (1, 4, 1);
JDWBAR2.setColors  ("#808080","#FFFFFF","#000000","#000000","#0D7CA1","#FFFFFF","#000000","#000000","#0D7CA1");
JDWBAR2.setFonts   ("Arial, Verdana","plain","bold","10px","Arial, Verdana","plain","bold","10px");
var JDWBAR1 = new JDWITEM(0);
JDWBAR1.setSizes   (1, 1, 1);
JDWBAR1.setColors  ("#000000","#000000","#F5E4C1","#000000","#1CA0E4","#000000","#F5E4C1","#000000","#1CA0E4");
JDWBAR1.setFonts   ("Arial, Verdana","plain","bold","10px","Arial, Verdana","plain","bold","10px");
// ___________________________________

/* MENU ITEMS */
siteMenu = new ECSmenu(0, 80); // 80 = width in pixels of menu
siteMenu.addItem(new ITEM("<center> HOME </center>", "//typhoon.500.to"));
siteMenu.addItem(new ITEM("  Go Home", "link.htm"));
siteMenu.addItem(new ITEM("  Contribute", "link.htm"));
siteMenu.addItem(new ITEM("  Link to Us", "link.htm"));
siteMenu.addItem(new ITEM("  Feedback", "link.htm"));
JDWBAR2.addNAVm(siteMenu); // add this menu category

siteMenu = new ECSmenu(0, 100);
siteMenu.addItem(new ITEM("<center> SCRIPTS </center>", ""));
siteMenu.addItem(new ITEM("<center>What's New?</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>All Categories</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>A-Z Script List</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>JS Books</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>JS Tutorial</center>","link.htm"));
JDWBAR2.addNAVm(siteMenu);

siteMenu = new ECSmenu(0, 100);
siteMenu.addItem(new ITEM("<center> JS FORUM </center>", ""));
siteMenu.addItem(new ITEM("<center>How Do I....?</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>Intro to JS</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>Script Help</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>Script Requests</center>","link.htm"));
JDWBAR2.addNAVm(siteMenu);

siteMenu = new ECSmenu(0, 100);
siteMenu.addItem(new ITEM("<center> HELP </center>", ""));
siteMenu.addItem(new ITEM("<center>Site FAQs</center>","link.htm"));
siteMenu.addItem(new ITEM("<center>JS Forum</center>","link.htm"));
JDWBAR2.addNAVm(siteMenu);

</script>


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两码中特网站 www.lgqxn.cn JavaScript实现的极酷导航菜单。

一、如果您使用的浏览器版本为IE6.0、360浏览器V3.0.8.1版本或者IE的更低版本浏览本页面，建议您升级浏览器至IE7以上，上面的“运行”按钮可能不能用，但您可按以下方式查看。
运行代码方式：
1、点击“复制”按钮；
2、在桌面建立一个txt文档；
3、粘贴复制的代码；
4、最后把txt的扩展名改为“htm”或“html”；
5、完成，打开即可看到效果。

二、如果您使用FireFox或者非IE浏览器，建议您使用IE7以上版本。上面的“复制”按钮失效，请您“全选”，以普通方式复制！

三、某些代码因需加载完Jquery等之类比较大的JS文件，如果您看不到效果，请您刷新页面！

四、某些代码不能完全兼容各浏览器，还请您再次修改才能使用！给您带来的不便！尽请谅解！谢谢您的支持！

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