function changimg(objj,imgsrc)
{
	var cf = objj.parentNode.getElementsByTagName("div");
	var df = document.getElementById("dpic");
			for(i=0;i<cf.length;i++)
			{
				if(objj==cf[i])
				{
					cf[i].className = "spicon";
					df.src = imgsrc;
				}
				else
				{
					cf[i].className = "spic";
				}
			}
}

function getNames(obj,name,tij)
	{	
		var p = document.getElementById(obj);
		var plist = p.getElementsByTagName(tij);
		var rlist = new Array();
		for(i=0;i<plist.length;i++)
		{
			if(plist[i].getAttribute("name") == name)
			{
				rlist[rlist.length] = plist[i];
			}
		}
		return rlist;
	}

		function fod(obj,name)
		{
			var p = obj.parentNode.getElementsByTagName("div");
			var p1 = getNames(name,"f","div"); // document.getElementById(name).getElementsByTagName("div");
			for(i=0;i<p1.length;i++)
			{
				if(obj==p[i])
				{
					p[i].className = "s";
					p1[i].className = "dis";
				}
				else
				{
					p[i].className = "n";
					p1[i].className = "undis";
				}
			}
		}
		
		function changpro(objct,objname)
		{
			var p = objct.parentNode.getElementsByTagName("div");
			var p1 = getNames(objname,"dpic","div"); // document.getElementById(name).getElementsByTagName("div");
			for(i=0;i<p1.length;i++)
			{
				if(objct==p[i])
				{
					p[i].className = "spicon";
					p1[i].className = "dis";
				}
				else
				{
					p[i].className = "spic";
					p1[i].className = "undis";
				}
			}
		}
function opener(openurl)
{
	window.open(openurl,'','status=no,scrollbars=yes,top=5,left=200,width=700,height=680');
}
		

function DecodeCookie(str)   
{   
　var strArr;   
　var strRtn="";   
　strArr=str.split("a");   
　for (var i=strArr.length-1;i>=0;i--)   
　strRtn+=String.fromCharCode(eval(strArr[i]));   
　return strRtn;   
}

function GetCookie (name)  
{  
　var strArg=name+"=";  
　var nArgLen=strArg.length;  
　var nCookieLen=document.cookie.length;  
　var nEnd;  
　var i=0;  
　var j; 
  var strname;
while (i<nCookieLen)  
{  
　j=i+nArgLen;  
　if (document.cookie.substring(i,j)==strArg)  
{  
　nEnd=document.cookie.indexOf (";",j);  
　if (nEnd==-1) nEnd=document.cookie.length; 
	strname=DecodeCookie(unescape(document.cookie.substring(j,nEnd)));
　	return strname;
}
　i=document.cookie.indexOf(" ",i)+1;  
　if (i==0) break; 
} 
  strname=""; 
　return strname; 
}

function chekuser()
{
var myname=GetCookie("jsckn");
var us=document.getElementById("buycar");
if (myname=="") {
us.innerHTML="<a href='/shop_user/buy.asp'>查看购物蓝</a> | <a href='/shop_user/Login.asp'>登录</a> | <a href='/shop_user/reg.asp'>注册</a>";
}else
{
us.innerHTML="您好:" +myname+ "! <a href='/shop_user/buy.asp'>查看购物蓝</a> | <a href='/shop_user/usercenter.asp'>我的账户</a>";
}
}

function cheklogin()
{
var usname=GetCookie("jsckn");
var gl=document.getElementById("logingo");
var dl=document.getElementById("loginon");
var uss=document.getElementById("users");

if (usname=="") {
gl.style.display="block";
dl.style.display="none";
}else
{
gl.style.display="none";
dl.style.display="block";
uss.innerHTML=usname;
}
}

function checkbuy()
{
   if(document.formbuy.selsize.value=="") {
	document.formbuy.selsize.focus();
    alert("请选择尺寸！");
	return false;
  }
}