// JavaScript Document

/*-- ������ʾ�㲿�� --*/
function show(id){
	document.getElementById(id).style.display="block"; 
}
function hidd(id){
	document.getElementById(id).style.display="none"; 
}


function show_msg(n){
	var y = document.getElementById('y'+n);
	if(y){
		y.className = "";
	}
	var m = document.getElementById('m'+n);
	if(m){
		m.style.display = "none";
	}
	var z = document.getElementById('z'+n);
	if(z){
		z.style.display = "block";
	} 
}

function hidd_msg(n,msg){
	var y = document.getElementById('y'+n);
	if(y){
		y.className = "zc_tx";
	}
	var m = document.getElementById('m'+n);
	if(m){
		m.style.display="block"; 
		m.className=msg; 
	}
	var z = document.getElementById('z'+n);
	if(z){
		z.style.display="none";
	} 
	 
	
}

/*-- head��- --*/
function head_show(){
	document.getElementById('enter').style.display="block"; 
//	document.getElementById('select_head').style.visibility="hidden"; 
}
function head_hidd(){
	document.getElementById('enter').style.display="none";
//	document.getElementById('select_head').style.visibility="inherit"; 
}

/*-- �л��㲿�� --*/
function tab(num,befor,id){
	//var el=e.target?e.target.parentNode:e.srcElement.parentNode;
	//var pa=el.parentNode.getElementsByTagName("span");
	
	//var pa = document.getElementById("menu").getElementsByTagName("span");
	for(var i=1;i<=num;i++){
		if(i==befor)
		{
			document.getElementById("menu"+i).className = "current";
		}else{
			document.getElementById("menu"+i).className = "";
		}
	}
	//el.className="current";
	
	for(i=1;i<=num;i++){
		try{
			if(i==befor){
				document.getElementById(id+i).style.display="block";
			}else{
				document.getElementById(id+i).style.display="none";
			}
		}catch(e){ }
	}
	
	var m = document.getElementById("a7");
	if(m){
		m.style.display = "none";
	}
}

function cairead(){
	document.getElementById("a6").style.display="none";
	document.getElementById("a7").style.display="block";
}

/*-- ע��ѡ�� --*/
function choice (a,b){
			if(document.getElementById('sf'+a).style.display=="none"){
				document.getElementById('sf'+a).style.display="block";
				document.getElementById('sf'+b).style.display="none";
			}else{
				document.getElementById('sf'+a).style.display="none";
				document.getElementById('sf'+a).style.display="block";
			}
}

	
/*-- regѡ�� --*/
function sel()
{
	var a =  document.getElementById('sel_box').value;
	
	for (s=0;s<=7;s++){
		if (s==a){document.getElementById('s'+s).style.display="block";}
		else {document.getElementById('s'+s).style.display="none";}
	}
}
function xuan(x)
{	
	for (s=0;s<=8;s++){
		if (s==x){document.getElementById('s'+s).style.display="block";}
		else {document.getElementById('s'+s).style.display="none";}
	}
}