function WorkAttention(txt,url,wh,ht){
	var 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 = "#333";
	shield.style.textAlign = "center";
	shield.style.zIndex = "10000";
	shield.style.filter = "alpha(opacity=0)";
	shield.style.opacity = 0;
	var alertFram = document.createElement("DIV");
	alertFram.id="alertFram";
	alertFram.style.position = "absolute";
	alertFram.style.left = "50%";
	alertFram.style.top = "50%";
	alertFram.style.marginLeft = "-"+wh/2+"px" ;
	alertFram.style.marginTop = -75+document.documentElement.scrollTop+"px";
	alertFram.style.width = wh;
	alertFram.style.height = ht;
	alertFram.style.background = "#ffffff";
	alertFram.style.textAlign = "center";
	alertFram.style.lineHeight = "20px";
	alertFram.style.zIndex = "10001";
	strh="<iframe  src="+ url +" frameborder=0 scrolling=no width=100% height="+ ht +"></iframe>"
	strHtml="<table width=100%  border=0 cellspacing=0 cellpadding=0><tr class=salerttop><td height=29px align=left style='padding-left:10px;color:#FFFFFF; line-height:25px;font-size=14px;'>"+ txt +"</td><td width=18% style='padding-right:10px;color:#FFFFFF;font-size=14px;'></td></tr><tr><td colspan=2>"+ strh +"</td></tr></table>"
	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 = 19;
	this.doAlpha = function(){
		if (++c > 20){clearInterval(ad);return 0;}
		setOpacity(shield,c);
	}
	var ad = setInterval("doAlpha()",1);
	this.doOk = function(){
		//alertFram.style.display = "none";
		//shield.style.display = "none";
		document.body.removeChild(alertFram);
		document.body.removeChild(shield);
		document.body.onselectstart = function(){return true;}
		document.body.oncontextmenu = function(){return true;}
	}
	//document.getElementById("do_OK").focus();
	document.body.onselectstart = function(){return false;}
	document.body.oncontextmenu = function(){return false;}
}