/*
			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(str){
			var msgw,msgh,bordercolor;
			msgw=400;//提示窗口的宽度
			msgh=350;//提示窗口的高度
			titleheight=25 //提示窗口标题高度
			bordercolor="#336699";//提示窗口的边框颜色
			titlecolor="#99CCFF";//提示窗口的标题颜色
			
			var sWidth,sHeight;
			sWidth=document.body.offsetWidth;
			sHeight=document.body.offsetHeight;
			if (sHeight<screen.height)
			{
				sHeight=screen.height;
			}

			var bgObj=document.createElement("div");
			bgObj.setAttribute('id','bgDiv');
			bgObj.style.position="absolute";
			bgObj.style.top="0";
			bgObj.style.background="#777";
			bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
			bgObj.style.opacity="0.6";
			bgObj.style.left="0";
			bgObj.style.width=sWidth + "px";
			bgObj.style.height=sHeight + "px";
			bgObj.style.zIndex = "10000";
			document.body.appendChild(bgObj);
			
			var msgObj=document.createElement("div")
			msgObj.setAttribute("id","msgDiv");
			msgObj.setAttribute("align","center");
			msgObj.style.background="white";
			msgObj.style.border="1px solid " + bordercolor;
	    	msgObj.style.position = "absolute";
            msgObj.style.left = "50%";
            msgObj.style.top = "50%";
            msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
            msgObj.style.marginLeft = "-225px" ;
            msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";
            msgObj.style.width = msgw + "px";
            msgObj.style.height =msgh + "px";
            msgObj.style.textAlign = "center";
            msgObj.style.lineHeight = (msgh-titleheight) + "px";
            msgObj.style.zIndex = "10001";
   
		   var title=document.createElement("h4");
		   title.setAttribute("id","msgTitle");
		   title.setAttribute("align","right");
		   title.style.margin="0";
		   title.style.padding="3px";
		   title.style.background=bordercolor;
		   title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
		   title.style.opacity="0.75";
		   title.style.border="1px solid " + bordercolor;
		   title.style.height="18px";
		   title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
		   title.style.color="white";
		   title.style.cursor="pointer";
		   title.innerHTML="关闭";
		   title.onclick=function(){
		        document.body.removeChild(bgObj);
                document.getElementById("msgDiv").removeChild(title);
                document.body.removeChild(msgObj);
                }
		   document.body.appendChild(msgObj);
		   document.getElementById("msgDiv").appendChild(title);
		   var txt=document.createElement("p");
		   txt.style.margin="1em 0"
		   txt.setAttribute("id","msgTxt");
		   txt.innerHTML="<img src='images/"+str+".jpg' />";
           document.getElementById("msgDiv").appendChild(txt);
            }