var posY;
	//黑色屏幕
	function scrolllocal(){
		 if (window.innerHeight) {  
			posY = window.pageYOffset;  
		}  
		else if (document.documentElement && document.documentElement.scrollTop) {  
			posY = document.documentElement.scrollTop;  
		}  
		else if (document.body) {  
			posY = document.body.scrollTop;  
		}  
	}

	var sys;
	  if ((navigator.userAgent.indexOf('MSIE') >= 0) && (navigator.userAgent.indexOf('Opera') < 0))
		{
			sys='ie';
		}else if (navigator.userAgent.indexOf('Firefox') >= 0)
		{
			sys='firefox';
		}else if (navigator.userAgent.indexOf('Opera') >= 0)
		{
			sys='opera';
		}

	 function bscreen(){
	  $("bscreen").style.display='block';
	  if (sys=='ie' || sys=="opera")
	  {
		$("bscreen").style.height = document.body.scrollHeight;
		$("bscreen").style.width = document.body.scrollWidth;
	  }else if (sys=='firefox')
	  {
		$("bscreen").style.height = (document.body.clientHeight+'px');
		$("bscreen").style.width = (document.body.clientWidth + 'px');
	  }
	}

	function show_shopcart()
	{	bscreen();
		scrolllocal();
		var temp=posY+200;
		$("shopcart_pop").style.top= temp + 'px';
		$("shopcart_pop").style.display='block';
		show_list();
	}

	function close_shopcart()
	{
		$("bscreen").style.display='none';
		$("shopcart_pop").style.display='none';
	}

	function show_list()
	{
		$('info_pop').innerHTML='<span style="float:left;"><IMG SRC="/images/ajax-loader.gif">Loading....</span>';
		var url="/include/shopcart_ajax.asp";
		var pars="action=dis_shopcart";
		var myAjax = new Ajax.Updater('info_pop', url, { 
			method: 'get', parameters: pars 
		}); 
	}

	function addshopcart(id){
	var url='/include/shopcart_ajax.asp';
	var pars='action=add_shopcart&prodid='+id+"&amount=1";
	var myAjax=new Ajax.Request(url,{ 
        method:'get',parameters:pars,onComplete:show_shopcart         
		});
	}

	function delshopcart(id){
		if (confirm('您是否确定不购买此商品？'))
		{
			var url='/include/shopcart_ajax.asp';
			var pars='action=del_shopcart&prodid='+id;
			var myAjax=new Ajax.Request(url,{ 
			  method:'get',parameters:pars,onComplete:show_shopcart         
			  });
		}
	}

	function delpointcart(id){
		if (confirm('您是否确定不兑换此商品？'))
		{
			var url='/include/shopcart_ajax.asp';
			var pars='action=del_point&pointid='+id;
			var myAjax=new Ajax.Request(url,{ 
			  method:'get',parameters:pars,onComplete:show_shopcart         
			  });
		}
	}

	function modif_amount(id)
	{
		var temp_amount=$("amount"+id).value;
		var temp_price=$("pro_price"+id).value;
		$("pro_total"+id).innerText=temp_amount * temp_price;
		var url='/include/shopcart_ajax.asp';
		var pars='action=modifa&datas='+temp_amount+'&operation='+id;
		var myAjax=new Ajax.Request(url,{ 
			method:'get',parameters:pars,onComplete:totalamount});
	}

	function checknum(s)
		{
			var nums=/^\d*$/;
			//alert(s);
			if ((!nums.test(s.value))||(s.value==0)||(s.value==''))
			{
			s.value=1;
			s.select();
			s.focus();
			return false;
			}else
			{
			return true;
			}
		}

	function totalamount()
	{
	var samount=0;
	var sprice=0;
	var totalmt=0;
	var totalprice=0;
	var temp=$('product_list').value;
	var arrtemp=temp.split(",");
		//
		for (var i=0; i<=(arrtemp.length-1);i++)
		{
		samount=$('amount'+arrtemp[i]).value;
		sprice=$('pro_price'+arrtemp[i]).value;
		totalmt+=parseInt(samount);
		totalprice+=parseInt(samount)*parseInt(sprice)
		}
	 $("totalamt").innerText=totalmt;
	 $("totalprice").innerText=totalprice;
	}

	function Trim(string)
		{
			return string.replace(/(^\s*)|(\s*$)/g, '');
		}

function addpointscart(id){
	var url='/include/shopcart_ajax.asp';
	var pars='action=add_points&pointid='+id;
	var myAjax=new Ajax.Request(url,{ 
        method:'get',parameters:pars,onComplete:show_shopcart         
		});
	}