var topheight = "145px";
function getdiv(id) 
{ 
    return (document.getElementById) ? document.getElementById(id) : document.all[id] ; 
}

getdiv('xiala1').onmouseover = 
function(){
	getdiv('wentandongtai').style.display = "block";
	getdiv('wentandongtai').style.left = (getdiv('xiala1').offsetLeft+40)+"px";
	getdiv('wentandongtai').style.top = topheight;
}
getdiv('wentandongtai').onmouseover = 
function(){
	getdiv('wentandongtai').style.display = "block";
}
getdiv('xiala1').onmouseout = 
function(){
	getdiv('wentandongtai').style.display = "none";
}
getdiv('wentandongtai').onmouseout = 
function(){
	getdiv('wentandongtai').style.display = "none";
}

getdiv('xiala2').onmouseover = 
function(){
	getdiv('zuojiazhanlan').style.display = "block";
	getdiv('zuojiazhanlan').style.left = (getdiv('xiala2').offsetLeft+40)+"px";
	getdiv('zuojiazhanlan').style.top = topheight;
}
getdiv('zuojiazhanlan').onmouseover = 
function(){
	getdiv('zuojiazhanlan').style.display = "block";
}
getdiv('xiala2').onmouseout = 
function(){
	getdiv('zuojiazhanlan').style.display = "none";
}
getdiv('zuojiazhanlan').onmouseout = 
function(){
	getdiv('zuojiazhanlan').style.display = "none";
}