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alert("上樓很牛叉!!");
<!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" xml:lang="zh-CN" lang="zh-CN">
<head>
<style type="text/css">
#ToolBar {
position:absolute;
bottom:0px;
right:0px;
width:100%;
height:100px;
background:#ccc;
z-index:3;
overflow:hidden;
}
#ToolBar2 {
position:absolute;
left:0px;
width:100%;
height:100px;
background:#ffffff;
}
</style>
<script language="javascript">
var over;
var out;
function overs(){
var ToolBar2=document.getElementById("ToolBar2");
var top=ToolBar2.style.top;
top=parseInt(top.replace("px"));
if(top>0){
ToolBar2.style.top=(top-5)+"px";
}else{
clearInterval(over);
}
ToolBar2=null;top=null;
}
function outs(){
var ToolBar2=document.getElementById("ToolBar2");
var top=ToolBar2.style.top;
top=parseInt(top.replace("px"));
if(top<100){
ToolBar2.style.top=(top+5)+"px";
}else{
clearInterval(out);
}
ToolBar2=null;top=null;
}
function overstart(){
clearInterval(out)
over=setInterval(overs,20);
}
function outstart(){
clearInterval(over)
out=setInterval(outs,20);
}
</script>
</head>
<body>
<div id="ToolBar">
<div id="ToolBar2" style="top:100px;">我出来啦</div>
</div>
<label onmouseover="overstart();" onmouseout="outstart();">鼠标放上来</label>
</body>
</html>