function sAlert(txt){
	var eSrc=(document.all)?window.event.srcElement:arguments[1];
	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.body.scrollHeight>document.body.clientHeight)?document.body.scrollHeight:document.body.clientHeight)+"px";
	shield.style.background = "#789ABB";
	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 = "-225px" ;
	alertFram.style.marginTop = -75+document.documentElement.scrollTop+"px";
	alertFram.style.width = "300px";
	alertFram.style.height = "100px";
	alertFram.style.background = "#ccc";
	alertFram.style.textAlign = "center";
	alertFram.style.lineHeight = "150px";
	alertFram.style.zIndex = "10001";
	strHtml  = "<table cellspacing=0 cellpadding=0 border=1 width=100% bordercolor=\"#6FC4EF\" rules=none class=\"TABLE1\">";
	strHtml += "	<tr><td  class=\"TD1\" background='../Common/images/msgboxTip1.gif'><table cellspacing=0 cellpadding=0 border=0><tr><td width=24 align=center><img src=\"../Common/images/msgIco2.gif\"></td><td width=255 style=\"color:#24A0DE;font-size:13.8px;font-weight:bold;height:25px;line-height:25px;\">系统提示<td><td><img src=\"../Common/images/msgClose.gif\" onclick=\"doOk()\" style=\"cursor:hand;\" alt=\"关闭\"></td></tr></table></td></tr>";
	strHtml += "	<tr><td  class=\"TD1\" bgcolor=\"#ffffff\"><table cellspacing=0 cellpadding=0 border=0 width=100%><tr><td width=60 align=center><img src=../Common/images/msgInfo1.gif align=absmiddle></td><td valign=middle style=\"font-size:14px;height:80px;color:#06559B\">"+txt+"</td></tr></table></td></tr>";
	strHtml += "	<tr><td  class=\"TD1\" align=center style=\"background:#EEF2F6;font-weight:bold;height:28px;line-height:25px;\"><input type=\"button\" class=\"btn\" onmouseout=\"javascript:mouseout(this)\" onmouseover=\"javascript:mouseover(this)\" value=\"确 定\" id=\"do_OK\" onclick=\"doOk()\" /></td></tr>";
	strHtml += "</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 = 0;
	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);
		eSrc.focus();
		document.body.onselectstart = function(){return true;}
		document.body.oncontextmenu = function(){return true;}
	}
	document.getElementById("do_OK").focus();
	eSrc.blur();
	document.body.onselectstart = function(){return false;}
	document.body.oncontextmenu = function(){return false;}
}