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📄 jstreedemo1.html

📁 myjavascript demo simaple demo
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>

<script language="JavaScript" type="text/javascript">
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) {
        whichEl = eval(el + "Child");
        if (whichEl.style.display == "none") {
            whichEl.style.display = "block";
        }
        else {
            whichEl.style.display = "none";
        }
    }
    else {
        whichEl = eval("document." + el + "Child");
        if (whichEl.visibility == "hide") {
            whichEl.visibility = "show";
        }
        else {
            whichEl.visibility = "hide";
        }
        arrange();
    }
}

function expandIt(el,img) {
    if (!ver4) return;
    if (IE4) {
        whichEl = eval(el + "Child");
        if (whichEl.style.display == "none") {
            whichEl.style.display = "block";
   img.src="images/open.gif";
        }
        else {
            whichEl.style.display = "none";
   img.src="images/closed.gif";
        }

    }
    else {
        whichEl = eval("document." + el + "Child");
        if (whichEl.visibility == "hide") {
            whichEl.visibility = "show";
   img.src="images/open.gif";
        }
        else {
            whichEl.visibility = "hide";
   img.src="images/closed.gif";
        }

        arrange();
    }
}
onload = initIt;
</script>


</head>

<body>
<!--以下放到body里面-->

<div id="CD1Parent" class="parent">
<table>
<tr>
 <td href="#" onClick="expandIt('CD1',img1); return false">
  <img id="img1" src='images/closed.gif' width='18' height='16' align='absmiddle' border=0>
  <img src='images/parent_folder.gif' align='absmiddle' border=0>
  big1
 </td>
</tr>
</table>
</div>
<div id="CD1Child" class="child">
 <img src="images/line1.gif" width='37' height='16' align='absmiddle' border=0>
 <img src="images/child_folder.gif" align='absmiddle' border=0>
 sina<br>
 
 <img src='images/line1.gif' width='37' height='16' align='absmiddle' border=0>
 <img src='images/child_folder.gif' align='absmiddle' border=0>
yahoo<br>
 
 <img src='images/line2.gif' width='37' height='16' align='absmiddle' border=0>
 <img src='images/child_folder.gif' align='absmiddle' border=0>
 sohu<br>

</div>


</body>
</html>

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