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<!--解读 M$ 源代码：JavaScript + CSS 实现动态菜单显示-->
<!--Default.htm-->
<!--小弟的 JavaScript 水平实在有够差劲，故以下注解均为个人理解，有疏漏及不当之处还请各位大虾指正-->
<!--以下源代码来源于 M$ Windows 2000 Professional 安装光盘的 DISCOVER/EASY2USE 目录，更改之处见文档的最后注解-->
<!--有关“单位”与“集合”的定义，请参见文档后面的注解-->
<HTML>
<head>
<meta http-equiv="Content-Type" content="text/HTML; charset=gb2312">
<TITLE>更易使用</TITLE><!--注1-->
<SCRIPT language="javascript">
var whichIm;
var varColor = "DDEEFF";
document.onmouseover = mouseOver;
document.onmouseout = mouseOut;
document.onmousedown = mouseDown;
document.onmouseup = mouseUp;
function mouseOver() {
var vSrc = window.event.srcElement;
if (vSrc.className == "child2" || vSrc.className == "child3" || vSrc.className == "parent")/*判断对象是否为“单位”*/ {
fColor = vSrc.style.backgroundColor;
vSrc.style.backgroundColor = varColor;
/*注2*/
}
}
function mouseOut() {
var vSrc = window.event.srcElement;
if (vSrc.className == "child2" || vSrc.className == "child3" || vSrc.className == "parent") {
vSrc.style.backgroundColor = fColor;
/*注2*/
}
}
function mouseDown() {
var vSrc = window.event.srcElement;
divColl=document.all.tags("DIV");
for (i=0; i < divColl.length; i++) {
if (((divColl(i).className == "parent")||(divColl(i).className == "child2")||(divColl(i).className == "child3"))&&(divColl(i).id != vSrc.id))/*注3*/ {
divColl(i).style.backgroundColor = "";
}
if (((divColl(i).className == "parent")||(divColl(i).className == "child2")||(divColl(i).className == "child3"))&&(divColl(i).id == vSrc.id))/*注3*/ {
divColl(i).style.backgroundColor = "#FFFFFF";
fColor = "#FFFFFF";
}
}
}
function mouseUp() {
var vSrc = window.event.srcElement;
if (vSrc.className == "child2" || vSrc.className == "child3" || vSrc.className == "parent") {
/*注2*/
}
}
//<!-- Navigation functions -->
function closeAll(el) {
divColl=document.all.tags("DIV");
for (i=0; i<divColl.length; i++) {
felEl=eval(el + "Child1");
if ((divColl(i).className == "child1") && (felEl != divColl(i))) {
divColl(i).style.display="none";
}
}
}
function navOnload() {
divColl=document.all.tags("DIV");
for (i=0; i< divColl.length; i++) {
if (divColl(i).className == "child1" || divColl(i).className == "child4") {
if (divColl(i).className == "child4" && divColl(i).style.display == "block") {
whichArrow = eval(divColl(i).Arr);
whichArrow.src = "../images/tocuparw.gif";
}
}
}
}
function expandIE(el) {
whichEl=eval(el + "Child1");
closeAll(el);
if (whichEl.style.display != "block") {
whichEl.style.display = "block";
whichEl.isExpanded=true;
}/*注4*/else {
whichEl.style.display = "none";
whichEl.isExpanded=false;
}/*注4*/
}
function expandIE2(el) {
whichEl=eval(el + "Child3");
whichIm=event.srcElement;
if (whichEl.style.display != "block") {//当被点击对象没有展开下级菜单时，展开下级菜单
whichEl.style.display = "block";
whichEl.isExpanded=true;
whichArrow = eval(whichIm.Arr);
whichArrow.src = "../images/tocuparw.gif";
} else {//当被点击对象已经展开下级菜单时，隐藏下级菜单
whichEl.style.display="none";
whichEl.isExpanded=false;
whichArrow = eval(whichIm.Arr);
whichArrow.src = "../images/tocdnarw.gif";
}
}
</SCRIPT>
<!--注1-->
<style>
A:link
{
color:000000;
text-decoration: none;
}
A:visited
{
color:666666;
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