页面加载弹出窗

<script>
window.onload=function(){
var url="http://www.baidu.com";
var  iWidth=800;
//模态窗口宽度
var  iHeight=480;
//模态窗口高度
var  iTop=(window.screen.height-iHeight)/2;
var  iLeft=(window.screen.width-iWidth)/2;

window.open(url,"Detail", "Scrollbars=yes,Toolbar=no,Location=no,Direction=no,Resizeable=no,   Width="+iWidth+" ,Height="+iHeight+",top="+iTop+",left="+iLeft,target="_blank");}
</script>