// JavaScript Document
function qiehuan(num){
		for(var id = 0;id<=9;id++)
		{
			if(id==num)
			{
				if(document.getElementById("qh_con"+id))
				{
					document.getElementById("qh_con"+id).style.display="block";
					//document.getElementById("mynav"+id).className="nav_on";
				}
			}
			else
			{
				if(document.getElementById("qh_con"+id))
				{
					document.getElementById("qh_con"+id).style.display="none";
					document.getElementById("mynav"+id).className="";
				}
			}
		}
	}