function qiehuan(num){
		for(var id = 1;id<=3;id++)
		{
			if(id==num)
			{
				
				document.getElementById("dh_nr_"+id).style.display="block";
				document.getElementById("dh_"+id).className="active";
			}
			else
			{
				document.getElementById("dh_nr_"+id).style.display="none";
				document.getElementById("dh_"+id).className="";
			}
		}
	}
	
	
	function qiehuan1(num){
		for(var id = 1;id<=2;id++)
		{
			if(id==num)
			{
				
				document.getElementById("dc_nr_"+id).style.display="block";
				document.getElementById("dc_"+id).className="active";
			}
			else
			{
				document.getElementById("dc_nr_"+id).style.display="none";
				document.getElementById("dc_"+id).className="";
			}
		}
	}

	function qiehuan2(num){
		for(var id = 1;id<=2;id++)
		{
			if(id==num)
			{
				
				document.getElementById("db_nr_"+id).style.display="block";
				document.getElementById("db_"+id).className="active";
			}
			else
			{
				document.getElementById("db_nr_"+id).style.display="none";
				document.getElementById("db_"+id).className="";
			}
		}
	}
	function qiehuan3(num){
		for(var id = 1;id<=2;id++)
		{
			if(id==num)
			{
				
				document.getElementById("da_nr_"+id).style.display="block";
				document.getElementById("da_"+id).className="active";
			}
			else
			{
				document.getElementById("da_nr_"+id).style.display="none";
				document.getElementById("da_"+id).className="";
			}
		}
	}