function showBg(Type)
{
	var className=el(Type).className;
	var newObj = el('newID');
	var caseObj = el('caseID');
	var viewObj= el('viewID');
	
	if(Type=="newID")
	{	
	    //¶¯Ì¬
	    if(className!="index-news-overbg")
		{
			newObj.className="";
		    caseObj.className="";
		    viewObj.className="";
		    newObj.className="index-news-overbg";
		    caseObj.className="index-other-outbg";
		    viewObj.className="index-other-outbg";	
			el('newsList').style.display="block";
			el('caseList').style.display="none";
			el('viewList').style.display="none";
			el('moreNews').style.display="block";
			el('moreCase').style.display="none";
			el('moreView').style.display="none";
		}
	}
	else if(Type=="caseID")
	{
		//°¸Àý
		if(className!="index-other-overbg")
		{
			newObj.className="";
		    caseObj.className="";
		    viewObj.className="";
		    newObj.className="index-news-outbg";
		    caseObj.className="index-other-overbg";
		    viewObj.className="index-other-outbg";	
			el('newsList').style.display="none";
			el('caseList').style.display="block";
			el('viewList').style.display="none";
			el('moreNews').style.display="none";
			el('moreCase').style.display="block";
			el('moreView').style.display="none";
		}
	}
	else  if(Type=="viewID")
	{
		//¹Ûµã
		if(className!="index-other-overbg")
		{
			newObj.className="";
		    caseObj.className="";
		    viewObj.className="";
		    newObj.className="index-news-outbg";
		    caseObj.className="index-other-outbg";
		    viewObj.className="index-other-overbg";	
			el('newsList').style.display="none";
			el('caseList').style.display="none";
			el('viewList').style.display="block";
			el('moreNews').style.display="none";
			el('moreCase').style.display="none";
			el('moreView').style.display="block";
		}
	}
}

function el(Obj)
{
   return document.getElementById(Obj);
}