动态创建弹出div

动态创建弹出div
answer：形式如：
function createDiv(){
var msgObj=document.createElement("div")
        msgObj.setAttribute("id","msgDiv");
        msgObj.setAttribute("align","center");
        msgObj.style.background="white";
        msgObj.style.border="1px solid #0000FF";
        msgObj.style.position = "absolute";
        msgObj.style.left = "55%";
        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 = 300 + "px";
        msgObj.style.height =120 + "px";
        msgObj.style.textAlign = "center";
        msgObj.style.lineHeight ="25px";
        msgObj.style.visibility = 'visible';
        msgObj.style.zIndex = "10001";
        var title=document.createElement("h4");
        title.setAttribute("id","msgTitle");
        title.setAttribute("align","left");
        title.style.margin="0";
        title.style.padding="3px";
        title.style.background="#0000FF";
        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 #0000FF";
        title.style.height="15px";
        title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
        title.style.color="white";
        title.style.cursor="pointer";
        title.innerHTML="信息提示";
        document.body.appendChild(msgObj);
        document.getElementById("msgDiv").appendChild(title);
        var txt=document.createElement("p");
        txt.style.margin="1em 0"
        txt.setAttribute("id","msgTxt");
    var str = "确定删除？";
    txt.innerHTML=str;
    document.getElementById("msgDiv").appendChild(txt);
var txt1=document.createElement("p");
        txt1.style.margin="1em 0"
        txt1.setAttribute("id","ggg");
    var str = "<input type='button' value='确定'/> "
    txt1.innerHTML=str;
    document.getElementById("msgDiv").appendChild(txt1);
}