/*
			作者：Daviv
			博客：http://blog.163.com/jxdawei
			时间：2006-10-27
			感谢：wenming (Blueidea)
			
			功能：弹出提示
			方法：调用sAlert("您要弹出的信息");			
			
			*/
			
			function sAlert(txt,mode,obj){
	if(document.getElementById("alertFram")){
		document.getElementById("alertText").innerHTML=txt;
		if(!mode){
			document.getElementById("do_OK").onclick=function(){doOk();}
		}else{
			switch(mode){
			case 1:
				document.getElementById("do_OK").onclick=function(){doOk();obj.focus();}				
				break;
			default:
				document.getElementById("do_OK").onclick=function(){doOk();}
				break;
			}
		}
		return false;
	}
	var eSrc=(document.all)?window.event.srcElement:arguments[1];
	var shield = document.createElement("iframe");
	shield.id = "shield";
	shield.style.position = "absolute";
	shield.style.left = "0px";
	shield.style.top = "0px";
	shield.style.width = document.documentElement.clientWidth + "px";
	shield.style.height = ((document.documentElement.clientHeight>document.documentElement.scrollHeight)?document.documentElement.clientHeight:document.documentElement.scrollHeight)+"px";
	shield.style.background = "black";
	shield.style.bgColor = "black";
	shield.style.fgColor = "black";

	shield.style.textAlign = "center";
	shield.style.zIndex = "10000";
	shield.style.filter = "alpha(opacity=0)";
	shield.bgOpacity = 0.5;
	shield.frameborder = 0;
	shield.bgFade = true;
	shield.modal = true;
	shield.hideEffect = null;
	shield.focusElement = null;
	shield.onShow = null;
	shield.onHide = null;
	shield.onContentUpdate = null;

	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 = "450px";
	alertFram.style.height = "150px";
	alertFram.style.background = "#000";
	alertFram.style.textAlign = "center";
	alertFram.style.lineHeight = "150px";
	alertFram.style.zIndex = "10001";

	strHtml  = "<ul style=\"list-style:none;margin:0px;padding:0px;width:100%\">\n";
	strHtml += "	<li style=\"color:#fff;background:#39f;text-align:left;padding-left:5px;font-size:14px;font-weight:bold;height:25px;line-height:25px;border:1px solid #39c;\">系统提示：</li>\n";
	strHtml += "	<li style=\"background:#fff;text-align:center;font-size:12px;height:120px;line-height:120px;border-left:1px solid #39c;border-right:1px solid #39c;\">";
	strHtml += ""
	strHtml += "<b id=\"alertText\">"+txt+"</b></li>\n";
	strHtml += "	<li style=\"background:#9cf;text-align:center;font-weight:bold;height:25px;line-height:25px; border:1px solid #39c;padding:3px 0;\" id=\"alertButton\"><input type=\"button\" value=\"确 定\" id=\"do_OK\" onclick=\"doOk()\" /></li>\n";
	strHtml += "</ul>\n";
	alertFram.innerHTML = strHtml;
	document.body.appendChild(alertFram);
	document.body.appendChild(shield);
	if(!mode){
		document.getElementById("do_OK").onclick=function(){doOk();}
	}else{
		switch(mode){
		case 1:
			document.getElementById("do_OK").onclick=function(){doOk();obj.focus();}				
			break;
		default:
			document.getElementById("do_OK").onclick=function(){doOk();}
			break;
		}
	}
	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(){
		c+=10;
		if (c > 80){clearInterval(ad);return 0;}
		setOpacity(shield,c);
	}
	var ad = setInterval("doAlpha()",1);
	this.doOk = function(){
		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;}
}