var xl,xl_img;
var pubtm="close";
function phheight(){
var h=320;
if(xl_img.height<h){
xl_img.height+=15;
setTimeout("phheight()",2);}
}

function disph(a,url){
xl=document.getElementById("xl");
xl_img=document.getElementById("xl_img");


ev = event || window.event;
var iX = ev.clientX;
var iY = ev.clientY;

var scrollPos; 
if (typeof window.pageYOffset != 'undefined') { 
   scrollPos = window.pageYOffset; 
} 
else if (typeof document.compatMode != 'undefined' && 
     document.compatMode != 'BackCompat') { 
   scrollPos = document.documentElement.scrollTop; 
} 
else if (typeof document.body != 'undefined') { 
   scrollPos = document.body.scrollTop; 
}


if(iX+200>window.screen.availWidth){xl.style.left = (iX-200) + "px";}
else{xl.style.left = (iX-50) + "px";}
xl.style.top = (scrollPos+iY) + "px";

if(pubtm=="close"){
xl_img.height=0;
xl_img.src=url;
xl.style.display="none";
xl.style.display='';
xl.style.overflow='hidden';

phheight();
pubtm="open";
}
}

function closph(){
xl.style.display='none';
pubtm="close";
}

function chck(){
var f=document.getElementById("fo");
if(!f.v.value){alert('评论内容不能空!');f.v.focus();return false;}
if(!f.q.value){alert('联系ＱＱ不能空!');f.q.focus();return false;}
if(!f.user.value){alert('用户名不能空!');f.user.focus();return false;}
if(!f.code.value){alert('验证码不能空!');f.code.focus();return false;}
}

function ck_d(){
var f=document.getElementById("form");
if(!f.pay.value){alert("请选择付款方式！");f.pay.focus();return false}
if(!f.num.value){alert("数量不能空！");f.num.focus();return false} 
if(!f.uname.value){alert("请填写收货人姓名！");f.uname.focus();return false}
if(!f.use.value){alert("请填写收货人联系方式！");f.use.focus();return false}
if(!f.qqq.value){alert("请填写联系QQ！");f.qqq.focus();return false}
if(!f.yp.value){alert("请填写邮编地址！");f.yp.focus();return false}
if(isNaN(f.yp.value)){alert("邮编只能输入数字!");f.yp.focus();return false} 
if(!f.ads.value){alert("请填写收货地址！");f.ads.focus();return false}
if(!f.co.value){alert("请填写验证码！");f.co.focus();return false}
return true;
}

function tj(j,e){
var f=document.getElementById("form");
var rmb=document.getElementById("rmb");
var j;
if(parseInt(f.num.value)!=f.num.value&&f.num.value){
	alert("数量只能输入整数数字!");
	f.num.value=1;
	j=j+e;
	rmb.innerHTML="￥"+j.toFixed(2);
	f.num.focus();
	return;
	}
j=f.num.value*j+e;
rmb.innerHTML="￥"+j.toFixed(2);
	}