语句是什么，谢谢
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1<div id="test">hello</div>
1<script language="javascript">
2setTimeout("test.style.visibility='hidden'",2000);//2秒
3</script>
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关闭层窗口
1.层的制作
1<div id="KBStatic" style="position:absolute; left:338px; top:80px; z-index:25; overflow: visible; width: 151px; height: 112px; layer-background-color: #CCCCFF; border: 1px none #000000">
2<table border="1" bordercolordark="#FF9900" bordercolorlight="#FF9900" cellspacing="1" width="151">
3<tr bgcolor="#FFCC33">
4<td>
5<div align="right">
6<a href="javascript:window.hideKBStatic()">×</a></div>
7<center><b><font color="#FFFFFF">这就是层的效果</font></b><br/><br/>
8快把我关掉！<img align="right" src="0064.gif"/>
9</center></td>
10</tr>
11</table>
12</div>
2、在
1<body>与</body>
里加上
1<script language="JavaScript">
2
3function KB_keepItInIE(theName,theWantTop,theWantLeft) {
4
5theRealTop=parseInt(document.body.scrollTop)
6
7theTrueTop=theWantTop+theRealTop
8
9document.all[theName].style.top=theTrueTop
10
11theRealLeft=parseInt(document.body.scrollLeft)
12
13theTrueLeft=theWantLeft+theRealLeft
14
15document.all[theName].style.left=theTrueLeft
16
17}
18
19function KB_keepItInNN(theName,theWantX,theWantY) {
20
21theRealLay=document.layers[theName]
22
23theBadX=self.pageYOffset
24
25theBadY=self.pageXOffset
26
27theRealX=theBadX+theWantX
28
29theRealY=theBadY+theWantY
30
31theRealLay.moveTo(theRealY,theRealX)
32
33}
34
35IE4=(document.all)?1:0
36
37NN4=(document.layers)?1:0
38
39if (IE4)
40
41setInterval('KB_keepItInIE("KBStatic",260,600)',1)
42
43if (NN4)
44
45setInterval('KB_keepItInNN("KBStatic",200,500)',1)
46
47//关掉窗口
48
49function hideKBStatic()
50{
51KBStatic.style.visibility="hidden";
52}
53</script>