// popup ad for by100 
// yl@2009-12-7
//基于JQuery库
//#popup为div外层；#pop-mask为滑动遮罩层
	var intime=500;//滑入时间
	var outtime=500;//滑出时间
	var adtime=5000;//显示时间,1秒=1000
function popupit(){
	$("#popup").css("display", "block");
	start();
	$(window).resize(function(){
	  rebuild();
	});
	$(window).scroll(function(){
	 moving();
	});
}
function rebuild(){
	if($("#popup").css("display")!="none"){
	$("#pop_mask").stop();
	window.clearInterval();
	start();
	}
}
function start(){
	var sc_width=document.body.clientWidth;
	var sc_height=window.screen.height;
	var myh = $("#popup").height();
	var myw = $("#popup").width();
	$("#pop_mask").animate({"width":myw,"height":myh},0);
	$("#pop_mask").slideUp(intime,function(){
//		window.setInterval(closeit,adtime);//延时自动关闭
	});
}
function moving(){
		$("#popup").stop();
		$("#popup").animate({"bottom":0-document.documentElement.scrollTop},500);
}
function closeit(){
	$("#pop_mask").slideDown(outtime,function(){
		$("#popup").css("display", "none");
		});
}