function sAlert(str){
    var msgw,msgh,bordercolor;
    msgw=300;//提示窗口的宽度
    msgh=200;//提示窗口的高度
    titleheight=25 //提示窗口标题高度
    bordercolor="#CCCCCC";//提示窗口的边框颜色
    titlecolor="#CCCCCC";//提示窗口的标题颜色

    var sWidth,sHeight;
    sWidth  = parseInt(document.body.scrollWidth);
    sHeight = parseInt(document.body.scrollHeight);

    var bgObj=document.createElement("div");
    bgObj.setAttribute('id','bgDiv');
    bgObj.style.position="absolute";
    bgObj.style.top="0";
    bgObj.style.background="#333333";
    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 = "55%";
    msgObj.style.top = "45%";
    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 = "10002";

    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("div");
    txt.setAttribute("align","center");
    txt.style.margin="1em 0";
    txt.style.width  = (msgw-50) + "px";
    txt.style.height = (msgh-50) + "px";
    txt.style.padding="10px 0px 5px 30px";
    txt.setAttribute("id","msgTxt");
    txt.style.lineHeight ="25px";
    txt.style.zIndex = "10003";
    txt.innerHTML=str;
    document.getElementById("msgDiv").appendChild(txt);

    var ifrObj=document.createElement("iframe");
    ifrObj.setAttribute("id","ifr");
    ifrObj.style.opacity="0.8";
    ifrObj.style.border="0";
    ifrObj.style.position = "relative";
    ifrObj.style.height = "100%";
    ifrObj.style.width = "100%";
    ifrObj.style.filter = "alpha(opacity=0)";
    document.getElementById("bgDiv").appendChild(ifrObj);

}

/**
* 隐藏表单上控件
*/
function hiddenControl(){
    //隐藏表单上的所有select下拉选择框
    var selobjs = document.getElementsByTagName("select");
    for(var i=0;i <selobjs.length;i++) {
        selobjs[i].style.display='none';
    }
    //隐藏表单上的上传文件控件
    var fileobj=document.getElementById("objfileuploadx"); 
    if(fileobj){
        fileobj.style.display='none';
    }
}


/**
* 显示表单上的控件
*/
function showControl(){
    //显示表单上的所有select下拉选择框
    var selobjs = document.getElementsByTagName("select");
    for(var i=0;i <selobjs.length;i++) {
        selobjs[i].style.display='';
    }
    //显示表单上的上传文件控件
    var fileobj=document.getElementById("objfileuploadx"); 
    if(fileobj){
        fileobj.style.display='';
    }
}