function qiehuan(num){
		for(var id =1;id<=6;id++)
		{
			if(id==num)
			{
				document.getElementById("qh_con"+id).style.display="block";
				document.getElementById("mynav"+id).className="nav_on";
			}
			else
			{
				document.getElementById("qh_con"+id).style.display="none";
				document.getElementById("mynav"+id).className="";
			}
		}
	}
function tabitR2(id,cid) {
tabR1.className="rd2";
tabR2.className="rd2";

id.className="rd1";
ctabR1.style.display="none";
ctabR2.style.display="none";

cid.style.display="block";
}

function sky(id1,cid1) {
tabR11.className="rd21";
tabR21.className="rd21";

id1.className="rd11";
ctabR11.style.display="none";
ctabR21.style.display="none";

cid1.style.display="block";
}

function killErrors() 
{ 
return true; 
}   
window.onerror = killErrors;