function sAlert(stitle,str){
    var msgw,msgh,bordercolor;
    msgw        = 400;        //提示窗口的宽度
    msgh        = 100;        //提示窗口的高度
    titleheight = 25          //提示窗口标题高度
    bordercolor = "#292873";  //提示窗口的边框颜色
    titlecolor  = "#ffffff";  //提示窗口的标题颜色

    var sWidth,sHeight;
    //sWidth = document.body.offsetWidth;
    //sHeight = screen.height;

    var bgObj = document.createElement("div");
    bgObj.setAttribute('id','bgDiv');
    bgObj.style.position    = "absolute";
    bgObj.style.top         = "0";
    bgObj.style.background  = "#ffffff";
    bgObj.style.filter      = "progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=30,finishOpacity=30)";
    bgObj.style.opacity     = "0.6";
    bgObj.style.left        = "0";
    //bgObj.style.width       = sWidth - 20 + "px";
    //bgObj.style.height      = sHeight - 233 + "px";
    bgObj.style.width       = "100%";
    bgObj.style.height      = "100%";
    bgObj.style.zIndex      = "10000";
    document.body.appendChild(bgObj);

    var msgObj = document.createElement("div")
    msgObj.setAttribute("id","msgDiv");
    msgObj.setAttribute("align","center");
    msgObj.style.background = "#EEFAFE";
    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 = "25px";
    msgObj.style.zIndex     = "10001";

    var title = document.createElement("h4");
    title.setAttribute("id","msgTitle");
    title.setAttribute("align","right");
    title.style.margin     = "0";
    title.style.padding    = "5px 12px 3px 12px";
    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      = titlecolor;
    title.style.cursor     = "pointer";
    title.innerHTML        = "<b>" + stitle + "</b>";
    /*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 = str;
    document.getElementById("msgDiv").appendChild(txt);
}