添加一个函数到window.onload里==常用小函数

<script language="javascript" type="text/javascript">

function addLoadEvent(func){

var oldonload=window.onload;

if(typeof window.onload!="function"){window.onload=func;}else{window.onload=function(){oldonload();func();}};

}

function uNameFocus(){document.getElementById("uName").focus();}

addLoadEvent(uNameFocus);

</script>