模仿QQ的菜单滚动效果

<html>
 
<head>
 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
 
<title>模仿QQ的滚动菜单效果</title>
 
<style type="text/css">
  .titleStyle
{
   background-color
:#FFC0FF;
   color
:#000000;
   border-top
:1px solid #FFFFFF;
   font-size
:9pt;
   cursor
:hand;
  
}

  .contentStyle
{
    background-color
:#FFF0FF;
    color
:#666699;
    font-size
:9pt;
   
}
 
  a
{
   color
:#666699;
  
}

  body
{
   font-size
:9pt;
  
}

  
</style>
 
</head>
<body>

<script language="JavaScript">
<!--
var layerTop=20//top
var layerLeft=20//left
var layerWidth=140//total width
var titleHeight=20//title height
var contentHeight=260//contend height
var stepNo=20//step no

var itemNo=0;
runtimes
=0;
document.write('
<span id=itemsLayer style="position:absolute;overflow:hidden;border:1px solid 

#ffc0ff;left:'+layerLeft+';top:'+layerTop+';width:'+layerWidth+';
">');

function addItem(itemTitle,itemContent){
 itemHTML
='<div id=item'+itemNo+' itemIndex='+itemNo
          
+' style="position:relative;left:0;top:'
          +(-contentHeight*itemNo)
      +';width:'+layerWidth+';
"><table width=100% cellspacing="0" cellpadding="0">'
      
+'<tr><td height='+titleHeight+' onclick=changeItem('+itemNo+') class="titleStyle" 

align
=center>'+itemTitle+'</td></tr>'
      
+'<tr><td height='+contentHeight+' class="contentStyle" valign="top">'
      
+itemContent
      
+'</td></tr></table></div>';
 document.write(itemHTML);
 itemNo
++;
}

//all contend
addItem('Welcome','<BR>  welcome!');

addItem('栏目1','
<BR><center><a href="#">子菜单A1</a> <BR><BR><a href="#">子菜单A2</a> <BR><BR><

href
="#">子菜单A3</a> <BR><BR><a href="#">更多</a></center>');

addItem('栏目2','
<BR><center><a href="#">子菜单B1 </a> <BR><BR><a href="#">子菜单B2</a> 

<BR><BR><a href="#">子菜单B3</a> <BR><BR><a href="#">更多..</a></center>');

addItem('栏目3','
<BR><center><a href="#">子菜单C1</a> <BR><BR><a href="#">子菜单C2</a> <BR><BR><

href
="#">子菜单B3</a> <BR><BR><a href="#">更多..</a></center>');

addItem('栏目4','
<BR><center><a href="#">子菜单D1</a> <BR><BR><a href="#">子菜单D2</a> <BR><BR><

href
="#">更多..</a></center>');

addItem('栏目5','
<BR><center><a href="#">子菜单E1</a></center>');

document.write('
</span>')
document.all.itemsLayer.style.height
=itemNo*titleHeight+contentHeight;

toItemIndex
=itemNo-1;onItemIndex=itemNo-1;

function changeItem(clickItemIndex){
 toItemIndex
=clickItemIndex;
 
if(toItemIndex-onItemIndex>0) moveUp(); 
 
else moveDown();
 runtimes
++;
 
if(runtimes>=stepNo){
  onItemIndex
=toItemIndex;
  runtimes
=0;
 }

 
else
  setTimeout(
"changeItem(toItemIndex)",10);
}


function moveUp(){
 
for(i=onItemIndex+1;i<=toItemIndex;i++)
eval('document.all.item'
+i+'.style.top=parseInt(document.all.item'+i+'.style.top)-contentHeight/s

tepNo;');
}


function moveDown(){
for(i=onItemIndex;i>toItemIndex;i--)
eval('document.all.item'
+i+'.style.top=parseInt(document.all.item'+i+'.style.top)+contentHeight/s

tepNo;');
}

changeItem(
0);
//-->
</script>
</body>
</html> 
posted @ 2005-07-01 14:17  让心灵去旅行  阅读(732)  评论(0编辑  收藏  举报