今天发现了一个非常好的网页特效-可隐藏的树形导航栏，非常棒，代码如下：

<SCRIPT language=JavaScript1.2>

function move(x, y) {
if (document.all) {
object1.style.pixelLeft += x;
object1.style.pixelTop  += y;}
else
if (document.layers) {
document.object1.left += x;
document.object1.top  += y;
}};

function position() {
document.object1.left += -82;
document.object1.top  += 0;
document.object1.visibility = "show"
};

function makeStatic() {
if (document.all) {object1.style.pixelTop=document.body.scrollTop+20}
else {eval('document.object1.top=eval(window.pageYOffset+20)');}
setTimeout("makeStatic()",0);}

</SCRIPT>

<STYLE type=text/css>.hl {
 BACKGROUND-COLOR: green; COLOR: white; CURSOR: hand
}
.n {
 
}
</STYLE>

<LAYER class=NS onmouseout="move(-132, 0)"
onmouseover="move(132, 0)" left="0" bgcolor="black" name="object1" top="20"
visibility="hide">
<SCRIPT language=JavaScript1.2>
if (document.all)
document.write('<DIV ID="object1" style="Position : Absolute ;Left : -82px ;Top : 20px ;Width : 0px ;Z-Index : 20">')
</SCRIPT>

<TABLE border=0 cellPadding=2 cellSpacing=1
onmouseout="move(-82, 0)" onmouseover=move(82,0) width=100>
  <TBODY>
  <TR>
    <TD bgColor=#aec9e5><FONT face=宋体 size=3><B>导航菜单</B></FONT></TD>
    <TD align=middle rowSpan=100 width=12>
      <SCRIPT language=JavaScript1.2>
if (document.all||document.layers)
document.write("<img src='menui.gif'>")
</SCRIPT>
    </TD></TR>
  <SCRIPT language=JavaScript1.2>
<!--
if (document.all||document.layers)
makeStatic();

if (document.layers) {
window.onload=position;
}

var sitems=new Array();
var sitemlinks=new Array();