网页常用下拉式导航菜单

把此代码放在<HEAD></head>之间
<style type="text/css">
</style>
<script language="javascript1.2">
scores = new Array(20);var numTotal=0;NS4 = (document.layers) ? 1 : 0;IE4 = (document.all) ? 1 : 0;ver4 = (NS4 || IE4) ? 1 : 0;if (ver4) {    with (document) {        write("<STYLE TYPE='text/css'>");        if (NS4) {            write(".parent {position:absolute; visibility:visible}");            write(".child {position:absolute; visibility:visible}");            write(".regular {position:absolute; visibility:visible}")        }        else {            write(".child {display:none}")        }        write("</STYLE>");    }}function getIndex(el) {    ind = null;    for (i=0; i<document.layers.length; i++) {        whichEl = document.layers[i];        if (whichEl.id == el) {            ind = i;            break;        }    }    return ind;}function arrange() {    nextY = document.layers[firstInd].pageY +document.layers[firstInd].document.height;    for (i=firstInd+1; i<document.layers.length; i++) {        whichEl = document.layers[i];        if (whichEl.visibility != "hide") {            whichEl.pageY = nextY;            nextY += whichEl.document.height;        }    }}function initIt(){    if (!ver4) return;    if (NS4) {        for (i=0; i<document.layers.length; i++) {            whichEl = document.layers[i];            if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";       }        arrange();    }    else {        divColl = document.all.tags("DIV");        for (i=0; i<divColl.length; i++) {            whichEl = divColl(i);            if (whichEl.className == "child") whichEl.style.display = "none";        }    }}function expandIt(el) { if (!ver4) return;    if (IE4) {        whichEl1 = eval(el + "Child");  for(i=1;i<=numTotal;i++){   whichEl = eval(scores[i] + "Child");   if(whichEl!=whichEl1) {    whichEl.style.display = "none";   }  }        whichEl1 = eval(el + "Child");        if (whichEl1.style.display == "none") {            whichEl1.style.display = "block";        }        else {            whichEl1.style.display = "none";        }    }    else {        whichEl = eval("document." + el + "Child");  for(i=1;i<=numTotal;i++){   whichEl = eval("document." + scores[i] + "Child");   if(whichEl!=whichEl1) {    whichEl.visibility = "hide";   }  }        if (whichEl.visibility == "hide") {            whichEl.visibility = "show";        }        else {            whichEl.visibility = "hide";        }        arrange();    }}onload = initIt;
</script>




	您现在的位置： vi设计在线 >> 经典文章 >> 网页设计 >> 技术教程 >> 正文