// JavaScript Document
//控制loading显示和隐藏
var loadingmyImg=new Image;
loadingmyImg.src="/images/loadingpic.gif"	;

var loadingW=loadingmyImg.width;
var loadingH=loadingmyImg.height;
var GW= document.body.clientWidth;
var GH = document.body.clientHeight;
var aw=(document.body.clientWidth-loadingW)/2;
var ah=(GH-loadingH)/2;
     
function createLoading(){	
     var oMessage = document.createElement("div");
     oMessage.name = "myLoading1";
     oMessage.id = "myLoading1";
     document.body.appendChild(oMessage);
	 
     var oMessageBack = document.createElement("div");
     oMessageBack.name = "myLoadingBack1";
     oMessageBack.id = "myLoadingBack1";
     document.body.appendChild(oMessageBack);
     
     var iMessage = document.getElementById("myLoading1");
	 var iMessageBack = document.getElementById("myLoadingBack1");
	 
     iMessage.style.position = "absolute";
     iMessage.style.border = "1px solid #000000";
     iMessage.style.backgroundColor ="#F6F6F6";
	 iMessage.appendChild(loadingmyImg);	 
     iMessage.style.left = (GW-loadingW) /2 +"px";
     iMessage.style.top = (GH-loadingH-50) /2 +"px";
	 iMessage.style.zIndex="2000";
	 iMessage.style.display="none";
	 
	 iMessageBack.innerHTML="<iframe width='"+GW+"' height='"+GH+"' style='filter: Alpha(Opacity=0);'></iframe>";	   
	 iMessageBack.style.position = "absolute";
	 iMessageBack.style.backgroundColor ="#B1B1B1";
	 iMessageBack.style.top="0px"; 
	 iMessageBack.style.left="0px";
	 iMessageBack.style.zIndex="1000";
     iMessageBack.style.display="none";
}


function hiddenLoading()
{
	var iMessage = document.getElementById("myLoading1");
	var iMessageBack = document.getElementById("myLoadingBack1");	
	iMessage.style.display="none";
	iMessageBack.style.display="none";
}

function displayLoading()
{
	var iMessage = document.getElementById("myLoading1");
	var iMessageBack = document.getElementById("myLoadingBack1");
    iMessage.style.left = aw +"px";
    iMessage.style.top = ah +"px";
	iMessage.style.display="block";
	iMessageBack.style.display="block";
}

createLoading();