var bindColor = function(){

for(var i = 0; i < as.length; i++)

{

var tr = as[i].parentNode.parentNode;

// tr.onmouseover = function(){

// this.style.backgroundColor ="#f2f2f2";

// }

// tr.onmouseout = function(){

// this.style.backgroundColor ="#fff";

// }  

addEvent(tr,"onmouseover",function(){

this.style.backgroundColor ="#f2f2f2";

})

addEvent(tr,"onmouseout",function(){

this.style.backgroundColor ="#fff";

})

}

}