弹出窗口，屏蔽背景

popup.js:

var isIe=(document.all)?true:false;
//设置select的可见状态
function setSelectState(state)
{
var objl=document.getElementsByTagName('select');
for(var i=0;i<objl.length;i++)
{
objl[i].style.visibility=state;
}
}
function mousePosition(ev)
{
if(ev.pageX || ev.pageY)
{
return {x:ev.pageX, y:ev.pageY};
}
return {
x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,y:ev.clientY + document.body.scrollTop - document.body.clientTop
};
}
//弹出方法
function showMessageBox(pos,wWidth)
{
closeWindow();
var bWidth=parseInt(document.documentElement.scrollWidth);
var bHeight=parseInt(document.documentElement.scrollHeight);
if(isIe){
setSelectState('hidden');}
var back=document.createElement("div");
back.id="back";
var styleStr="top:0px;left:0px;position:absolute;background:#999;width:"+bWidth+"px;height:"+bHeight+"px;";
styleStr+=(isIe)?"filter:alpha(opacity=0);":"opacity:0;";
back.style.cssText=styleStr;
document.body.appendChild(back);
showBackground(back,50);
var mesW=document.getElementById('mesWindow');
mesW.className="mesWindow";
var v_top=(document.body.clientHeight-mesW.clientHeight)/2;
v_top+=document.documentElement.scrollTop;
styleStr="top:"+(v_top-180)+"px;left:"+(document.body.clientWidth/2-mesW.clientWidth/2)+"px;position:absolute;width:"+wWidth+"px;margin-left:-300px;left:50%;z-index:9999;";
mesW.style.cssText=styleStr;
}
//让背景渐渐变暗
function showBackground(obj,endInt)
{
if(isIe)
{
obj.filters.alpha.opacity+=5;
if(obj.filters.alpha.opacity<endInt)
{
setTimeout(function(){showBackground(obj,endInt)},5);
}
}else{
var al=parseFloat(obj.style.opacity);al+=0.05;
obj.style.opacity=al;
if(al<(endInt/100))
{setTimeout(function(){showBackground(obj,endInt)},5);}
}
}
//关闭窗口
function closeWindow()
{
if(document.getElementById('back')!=null)
{
document.getElementById('back').parentNode.removeChild(document.getElementById('back'));
}
if(document.getElementById('mesWindow')!=null)
{
//document.getElementById('mesWindow').parentNode.removeChild(document.getElementById('mesWindow'));
document.getElementById('mesWindow').style.display="none";
}
if(isIe){
setSelectState('');}
}
//测试弹出
function MessageBox(ev,width)
{
var objPos = mousePosition(ev);
if(width=='' || width==null){width=400;}
showMessageBox(objPos,width);
}

 

 

popup.css:

/* CSS Document */
.mesWindow{border:#0099FF 1px solid;background:#fff;}
.mesWindowTop{border-bottom:#eee 1px solid;margin-left:0px;padding:3px;font-weight:bold;text-align:left;font-size:12px;color:#FFFFFF; }
.mesWindowContent{margin:4px;font-size:12px; text-align:center}
.mesWindow .close{height:15px;width:28px;border:none;cursor:pointer;text-decoration:underline;background:#fff}

 

调用接口：

function popup(){
//调用弹出窗口
MessageBox(event,700);

}

 

<!--弹出内容在这里设置 start-->
<div id="mesWindow" style="display:none;"><div class='mesWindowTop'><table width='100%' height='100%' style="background-color:#0099FF; ">
  <tr><td height="20" style="padding-left:20px;color:white; font-weight:bold;">标题</td>
<td style='width:1px; padding-right:5px;'>
  <img src="../images/menu_close1.gif" width="16" height="16" onClick="closeWindow();" style="cursor:hand;" /></td>
  </tr></table></div><div class='mesWindowContent' id='mesWindowContent'><!--#include file="包含的内容"--></div><div class='mesWindowBottom'></div></div>
<!--end-->