window.onload=function(){
var divObj=document.getElementById("rightDiv");
divObj.style.width=parseInt(document.body.offsetWidth)/3;
divObj.style.height=document.body.offsetHeight;
var isOverDiv=false;
document.body.onmousemove=function(e){
var e=e||window.event;
if(parseInt(divObj.style.width)>parseInt(document.body.offsetWidth)-parseInt(e.clientX)){
isOverDiv=true;
divObj.style.display='';
}
if(parseInt(divObj.style.width)
}
}
}