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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title></title>
<style type="text/css">
<!--
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COLOR: #000000; FONT-FAMILY: "宋体"
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COLOR: #FF0000
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</style>
</head>
<base target="main">
<script language="JavaScript">
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) {
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for (i=0; i<document.layers.length; i++) {
whichEl = document.layers[i];
if (whichEl.id == el) {
ind = i;
break;
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return ind;
}
function arrange() {
nextY = document.layers[firstInd].pageY +document.layers[firstInd].document.height;
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whichEl = document.layers[i];
if (whichEl.visibility != "hide") {
whichEl.pageY = nextY;
nextY += whichEl.document.height;
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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";
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}
}
function expandIt(el) {
if (!ver4) return;
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whichEl1 = eval(el + "Child");
for(i=1;i<=numTotal;i++){
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whichEl.style.display = "none";
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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>
<body leftmargin="5" topmargin="0">
<div id='KB10Parent' class='parent'><IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20"><a href="aboutuse.htm" target="mainFrame" class="font14" >如何安装使用</a></div>
<div id='KB10Child' class='child'>
<!--
<img src="http://www.learnbbs.com/mathtool/dll/images/line_tri.gif" width="19" height="20"><a href="menu.asp" target="mainFrame">功能分类</a>
-->
</div>
<div id='KB1Parent' class='parent'> <a href="used1.htm" onClick="expandIt('KB1'); return false " target="mainFrame" >
<IMG SRC='http://www.learnbbs.com/mathtool/dll/images/+.gif' BORDER=0 width="19" height="20" >运算符及常量简介</a></div>
<div id='KB1Child' class='child'></div>
<div id='KB3Parent' class='parent'> <a href="used2.htm" onClick="expandIt('KB3'); return false" target="mainFrame">
<IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20">表达式高级计算器</a> </div>
<div id='KB3Child' class='child'> </div>
<div id='KB9Parent' class='parent'> <IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20"><a target="mainFrame" href="used3.htm">任意方程与不等式求解</a></div>
<div id='KB9Child' class='child'> </div>
<div id='KB2Parent' class='parent'><IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20"><a target="mainFrame" href="used4.htm" target="mainFrame" class="font14" onClick="expandIt('KB2'); return false">任意方程组的求解</a>
</div>
<div id='KB2Child' class='child'> </div>
<div id='KB4Parent' class='parent'><IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20"><a target="mainFrame" href="used5.htm">任意表达式的定积分</a></div>
<div id='KB4Child' class='child'></div>
<div id='KB7Child' class='child'></div>
<div id='KB8Parent' class='parent'><IMG SRC='http://www.learnbbs.com/mathtool/dll/images/%2B.gif' BORDER=0 width="19" height="20"><a target="mainFrame" href="used6.htm" target="mainFrame" class="font14" onClick="expandIt('KB8'); return false">数理统计及预测分析</a>
</div>
<div id='KB8Child' class='child'><br>
</div>
<SCRIPT>
numTotal=10;
scores[1]='KB1';
scores[2]='KB2';
scores[3]='KB3';
scores[4]='KB4';
scores[5]='KB5';
scores[6]='KB6';
scores[7]='KB7';
scores[8]='KB8';
scores[9]='KB9';
scores[10]='KB10';
</SCRIPT>
</body>
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