// JavaScript Document
var time;
var v="undefined";
function nav_hid(n)
{
   v=n;
   time=setTimeout("nav_hid1()",500);
}
function nav_hid1()
{
   if(document.getElementById("pn"+v).className=="current")
   {
	  document.getElementById("pn"+v).className="current";
   }
   if(document.getElementById("pn"+v).className=="current1")
   {
	  document.getElementById("pn"+v).className="";
   }
   document.getElementById('pop'+v).style.display="none";	
}
function nav(n)
{
   clearTimeout(time);
   if(v=="undefined")
   {
      document.getElementById('pop'+n).style.display="block";	
   }
   else
   {
      document.getElementById('pop'+v).style.display="none";
	  document.getElementById('pop'+n).style.display="block";
	  
   }
}


function show_dow()
{
   document.getElementById('wz_con').className="wz_con1";	
   document.getElementById('dow').style.display="none";	
}

function tb_show(n)
{
   for(var i=1;i<=document.getElementById("buy_tb").getElementsByTagName("div").length;i++	)
   {
	  document.getElementById("td"+i).style.display="none";   
   }
   document.getElementById("td"+n).style.display="block";
   
}

function nh(n)
{
   for(var i=1;i<=document.getElementById("nh").getElementsByTagName("li").length;i++	)
   {
	  document.getElementById("n"+i).className="";
	  document.getElementById("nc"+i).style.display="none";
   }
   document.getElementById("n"+n).className="current";
   document.getElementById("nc"+n).style.display="block";
}








function jia(obj)
  {
    var value=Number(obj.parentNode.getElementsByTagName("input")[1].value)+1;
	obj.parentNode.getElementsByTagName("input")[1].value=value;
  }
  
function jian(obj)
  {
    var value=Number(obj.parentNode.getElementsByTagName("input")[1].value)-1;
    if(obj.parentNode.getElementsByTagName("input")[1].value==0)
  	{
	   obj.parentNode.getElementsByTagName("input")[1].value=0;
	}
	else
    {
       obj.parentNode.getElementsByTagName("input")[1].value=value;
	}   
  }