利用js对象弹出一个层

复制代码代码如下:
<！DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>脚本之家-弹出一个层</title>
<script language="javascript">
function cmsgbox（vtitle,vwidth,vhight,vtop,vleft）
{
this.title=vtitle;
this.width=vwidth;
this.height=vhight;
this.top=vtop;
this.left=vleft;
this.id=0;
}
cmsgbox.prototype.showdiv=function（）
{
var str="";
str+="<div id="div1" style="z-index:1;background-color:white;position:absolute;border:2px solid slategray;left:"+this.vleft+"px;top:"+this.vtop+"px;width:"+this.width+"px;">";

str+="<div style="padding-bottom:2px;background-color:slategray;width:100%;height:16px;color:white;" >";
str+=" <div style="float:left;height:16px;overflow:hidden;margin:0px;padding:4px 0px 0px 5px;width:"+（parseInt（this.width）-24*2-5）+"px;">"+this.title+"</div>";
str+=" <span style="width:14px;font-family:webdings;cursor:hand;">0</span>";
str+=" <span style="width:14px;font-family:webdings;cursor:hand;" onclick="cmsgbox.closediv（this）;">r</span>";
str+="</div>";

str+="<div style=" margin:10px 5px 10px 10px;word-break:break-all;">";
str+="xxx";
str+="</div>";
str+="</div>";
//document.write（str）;
document.body.insertAdjacentHTML（"beforeEnd",str）;
}
/////////////////////窗口显示//////////////////////////////
function show（）
{
var box=new cmsgbox（"小家伙呀",400,300）;
box.showdiv（）;
}
</script>
</head>

<style>
body{
font-size:12px;
}
</style>
<body>
<p onclick="show（）;">弹了一个层</p>
</body>
</html>