namespace.register("R5")

R5.loading=function()//“正在加载”类
{
	this.timer=null;
	this.imgsrc="../images/image/loading.gif" 
}

R5.loading.prototype.checkState=function()//检测页面状态
{
	  if(window.document.readyState=='complete')
	  	{
			document.getElementById("loading").style.display="none";
			window.clearTimeout(this.timer);
			//alert("Fdsa");
		}
		var obj=new R5.loading(); 
		this.timer=window.setTimeout(obj.checkState,800)
}  

window.onscroll=function()//随屏幕滚动而滚动
{
	var newheight=(document.documentElement.clientHeight==0)?document.body.clientHeight:document.documentElement.clientHeight	
	document.getElementById('loading').style.top=newheight/2+document.body.scrollTop;	
}

var newheight=(document.documentElement.clientHeight==0)?document.body.clientHeight:document.documentElement.clientHeight	
var newwidth=(document.documentElement.clientWidth==0)?document.body.clientWidth:document.documentElement.clientWidth

var load=new R5.loading();
var top=newheight/2+document.body.scrollTop-70;
var left=newwidth/2-96;


document.write("<div id='loading' style='position:absolute;top:"+top+"px;left:"+left+"px;filter:alpha(opacity=80);'><img alt='正在加载，请稍候......' src="+load.imgsrc+"></div>");
load.checkState();