//创建子窗口
var shield;
var alertFram;

//抢购登录
function showLoginBox(rec_no,goodstype)
{
	shield = document.createElement("DIV");
	shield.id = "shield";
	shield.style.position = "absolute";
	shield.style.left = "0px";
	shield.style.top = "0px";
	shield.style.width = "100%";
	shield.style.height = ((document.documentElement.clientHeight>document.documentElement.scrollHeight)?document.documentElement.clientHeight:document.documentElement.scrollHeight)+"px";
	shield.style.background = "#000";
	shield.style.textAlign = "center";
	shield.style.zIndex = "10000";
	shield.style.filter = "alpha(opacity=0)";
	shield.style.opacity = 0;
	alertFram = document.createElement("DIV");
	alertFram.id="alertFram";
	alertFram.style.position = "absolute";
	alertFram.style.left = "50%";
	alertFram.style.top = "40%";
	alertFram.style.marginLeft = "-225px" ;
	alertFram.style.marginTop = -75+document.documentElement.scrollTop+"px";
	alertFram.style.width = "419px";
	alertFram.style.height = "253px";
	alertFram.style.background = "#ccc";
	alertFram.style.textAlign = "center";
	alertFram.style.lineHeight = "150px";
	alertFram.style.zIndex = "10001";

	strHtml  = "<iframe name='iframe_job' id='iframe_job' frameborder='0' width='419' height='253' scroll='no' src='/rushbuy/login.php?id="+rec_no+"&ty="+goodstype+"&rnd="+Math.random()+"'></iframe>";
	alertFram.innerHTML = strHtml;
	document.body.appendChild(alertFram);
	document.body.appendChild(shield);
	this.setOpacity = function(obj,opacity){
		if(opacity>=1)opacity=opacity/100;
		try{ obj.style.opacity=opacity; }catch(e){}
		try{ 
			if(obj.filters.length>0&&obj.filters("alpha")){
				obj.filters("alpha").opacity=opacity*100;
			}else{
				obj.style.filter="alpha(opacity=\""+(opacity*100)+"\")";
			}
		}catch(e){}
	}
	var c = 0;
	this.doAlpha = function(){
		if (++c > 20){clearInterval(ad);return 0;}
		setOpacity(shield,c);
	}
	var ad = setInterval("doAlpha()",1);

	document.body.onselectstart = function(){return false;}
	document.body.oncontextmenu = function(){return false;}
}

//关闭子窗口
function doClose(){
	alertFram.style.display = "none";
	shield.style.display = "none";
	document.body.removeChild(alertFram);
	document.body.removeChild(shield);
	shield = null;
	alertFram = null;
	document.body.onselectstart = function(){return true;}
	document.body.oncontextmenu = function(){return true;}
}