// JavaScript Document
function chgbg(str)
{
	if(str == "1")
	{
		document.getElementById("hd1").style.display = "block";
		document.getElementById("bg1").className = "tdbiaodan1";
		document.getElementById("jt1").style.display = "block";
		//document.getElementById("table01").style.display = "block";
		
		document.getElementById("hd2").style.display = "none";
		document.getElementById("bg2").className = "tdbiaodan";
		document.getElementById("jt2").style.display = "none";
		//document.getElementById("table02").style.display = "none";
		
		document.getElementById("hd3").style.display = "none";
		document.getElementById("bg3").className = "tdbiaodan";
		document.getElementById("jt3").style.display = "none";
		//document.getElementById("table03").style.display = "none";
		
		document.getElementById("hd4").style.display = "none";
		document.getElementById("bg4").className = "tdbiaodan";
		document.getElementById("jt4").style.display = "none";
		//document.getElementById("table04").style.display = "none";
	}
	
	if(str == "2")
	{
		document.getElementById("hd2").style.display = "block";
		document.getElementById("bg2").className = "tdbiaodan1";
		document.getElementById("jt2").style.display = "block";
		//document.getElementById("table02").style.display = "block";
		
		document.getElementById("hd1").style.display = "none";
		document.getElementById("bg1").className = "tdbiaodan";
		document.getElementById("jt1").style.display = "none";
		//document.getElementById("table01").style.display = "none";
		
		document.getElementById("hd3").style.display = "none";
		document.getElementById("bg3").className = "tdbiaodan";
		document.getElementById("jt3").style.display = "none";
		//document.getElementById("table03").style.display = "none";
		
		document.getElementById("hd4").style.display = "none";
		document.getElementById("bg4").className = "tdbiaodan";
		document.getElementById("jt4").style.display = "none";
		//document.getElementById("table04").style.display = "none";
	}
	
	if(str == "3")
	{
		document.getElementById("hd3").style.display = "block";
		document.getElementById("bg3").className = "tdbiaodan1";
		document.getElementById("jt3").style.display = "block";
		//document.getElementById("table03").style.display = "block";
		
		document.getElementById("hd1").style.display = "none";
		document.getElementById("bg1").className = "tdbiaodan";
		document.getElementById("jt1").style.display = "none";
		//document.getElementById("table01").style.display = "none";
		
		document.getElementById("hd2").style.display = "none";
		document.getElementById("bg2").className = "tdbiaodan";
		document.getElementById("jt2").style.display = "none";
		//document.getElementById("table02").style.display = "none";
		
		document.getElementById("hd4").style.display = "none";
		document.getElementById("bg4").className = "tdbiaodan";
		document.getElementById("jt4").style.display = "none";
		//document.getElementById("table04").style.display = "none";
	}
	
	if(str == "4")
	{
		document.getElementById("hd4").style.display = "block";
		document.getElementById("bg4").className = "tdbiaodan1";
		document.getElementById("jt4").style.display = "block";
		//document.getElementById("table04").style.display = "block";
		
		document.getElementById("hd1").style.display = "none";
		document.getElementById("bg1").className = "tdbiaodan";
		document.getElementById("jt1").style.display = "none";
		//document.getElementById("table01").style.display = "none";
		
		document.getElementById("hd3").style.display = "none";
		document.getElementById("bg3").className = "tdbiaodan";
		document.getElementById("jt3").style.display = "none";
		//document.getElementById("table02").style.display = "none";
		
		document.getElementById("hd2").style.display = "none";
		document.getElementById("bg2").className = "tdbiaodan";
		document.getElementById("jt2").style.display = "none";
		//document.getElementById("table03").style.display = "none";
	}
}