//公共菜单ID变量
	var defaultMenuID;
	
	function qiehuan(num){
		for(var id = 0;id<=12;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 SDcon(num){
		qiehuan(num);
	}
	
	function getUrl(){
	   
//	    qiehuan(0);
	    
	    if(defaultMenuID != "" && defaultMenuID != null)
	    {
	        qiehuan(defaultMenuID);
	    }
	    else
	    {
	        qiehuan(0);
	    }
	   
	}
	
	function Over(num){
		document.getElementById("mynav"+num).className="nav_on";
	}
	
	function Leave(num){
		document.getElementById("mynav"+num).className="";
	}