function _setOpacity(_obj,_value) {
	_obj.style.opacity = _value/10;// CSS3
	_obj.style.filter = 'alpha(opacity=' + _value*10 + ')';//ie5.5
	_obj.style.MozOpacity = _value/10;// Gecko
	_obj.style.KhtmlOpacity = _value/10;// Konquerer and Safari
}

function shimObject(text){
	this._shim = document.createElement("DIV");

	//.appendChild(this._shim);
	this._shim.style.position="absolute";
	this._shim.style.left="0";
	this._shim.style.top="0";
	this._shim.style.width="100%";
	this._shim.style.height="100%";
	this._shim.style.backgroundColor="white";
	this._shim.style.zIndex=30;
	_setOpacity(this._shim,7);
	
	this._frameShim=document.createElement("IFRAME");
	this._frameShim.style.position="absolute";
	this._frameShim.style.left="0";
	this._frameShim.style.top="0";
	this._frameShim.style.width="100%";
	this._frameShim.style.height="100%";
	_setOpacity(this._frameShim,0);
	this._shim.appendChild(this._frameShim);
	
	
	this._layer=document.createElement('DIV');
	this._layer.style.position="absolute";
	this._layer.style.left="0";
	this._layer.style.top="0";
	this._layer.style.width="100%";
	this._layer.style.height="100%";

	this._layer.style.zIndex=31;
	
	this._table=document.createElement('TABLE');
	this._table.className='causeTable';
	this._table.style.width="100%";
	this._table.style.height="100%";
	this._layer.appendChild(this._table);

	this._tbody=document.createElement('TBODY');
	this._table.appendChild(this._tbody);

	this._row=document.createElement('TR');
	this._tbody.appendChild(this._row);

	this.cell=document.createElement('TD');
	this._row.appendChild(this.cell);
	
	this.cell.align="center";
	this.cell.vAlign="middle";
	this.cell.style.fontSize="40pt";
	this.cell.style.fontWeight = 'bolder';

	
	
	if(text)
		this.cell.innerHTML=text;
	else
		this.cell.innerHTML="Loading";


	//document.body.appendChild(this._layer);
	
	this._onScroll=	function(){
		var currentOffset = document.documentElement.scrollTop || document.body.scrollTop; // body for Safari
		var currentLeftOffset = document.documentElement.scrollLeft || document.body.scrollLeft; // body for Safari

		//self._shim.style.top=currentOffset+"px";
		//self._shim.style.left=currentLeftOffset+"px";
		self._layer.style.top=0;//currentOffset+"px";
		self._layer.style.left=0;//currentLeftOffset+"px";

	}
	this._onResize=	function(){
		width=document.documentElement.clientWidth?document.documentElement.clientWidth:document.body.clientWidth;
		height=document.documentElement.clientHeight?document.documentElement.clientHeight:document.body.clientHeight;
		docWidth=(document.documentElement.scrollWidth>document.body.scrollWidth)?document.documentElement.scrollWidth:document.body.scrollWidth;
		docHeight=(document.documentElement.scrollHeight>document.body.scrollHeight)?document.documentElement.scrollHeight:document.body.scrollHeight;
		self._layer.style.width=width +"px";
		self._shim.style.width=(width>docWidth)?width:docWidth +"px";
		self._layer.style.height=height +"px";
		self._shim.style.height=(height>docHeight)?height:docHeight +"px";


	}

	this.show = function(){
	
		document.body.appendChild(self._shim);
		document.body.appendChild(self._layer);
		window.onscroll = document.documentElement.onscroll = self._onScroll;
		window.onresize = self._onResize;
		self._onScroll();
		self._onResize();
	}	
	this.hide = function(){
        //try {
		document.body.removeChild(self._shim);
		document.body.removeChild(self._layer);
		window.onscroll = document.documentElement.onscroll = null;
		window.onresize = null;
        //} catch (err) {
        //}
	}
	
	var self=this;
}