网页常用下拉式导航菜单

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网页常用下拉式导航菜单

作者：佚名转贴自：本站原创点击数：2175

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>