内嵌框架自适应页面大小 js语句

 

main.htm   主页面

< html >   
     < head >   
        < meta   http-equiv ='Content-Type'   content ='text/html;   charset =gb2312' />   
        < title > iframe自适应加载的页面高度 </ title >   
     </ head >   
     
     < body >
         < iframe src ="child.htm" ></ iframe >
     </ body >
</ html >


frame.htm 内嵌框架页

< html >   
< head >   
     < meta   http-equiv ='Content-Type'   content ='text/html;   charset =gb2312' />   
       < title > iframe   自适应其加载的网页(多浏览器兼容) </ title >   
     < script type ="text/javascript" >
    <!--
    function iframeAutoFit()
    {
        var ex;
        try
        {
            if(window!=parent)
            {
                var a = parent.document.getElementsByTagName("IFRAME");
                
                for(var i=0; i<a.length; i++) //author:meizz
                {
                    if(a[i].contentWindow==window)
                    {
                        var h1=0, h2=0, h3=0, h4=0;
                        if(document.documentElement&&document.documentElement.scrollHeight)
                        {
                             h1 = document.documentElement.scrollHeight;
                             h3 = document.documentElement.scrollWidth;
                         }
                        if(document.body) h2=document.body.scrollHeight;h4=document.body.scrollWidth;
                        

                        var h=Math.max(h1, h2);
                        var h0=Math.max(h3,h4);
                       
                         a[i].style.height = h +"px";
                         a[i].style.width = h0 + "px";
                     }
                 }
             }
         }
        catch (ex){}
     }
    
    if(document.attachEvent)
    {
         window.attachEvent("onload",   iframeAutoFit);
         window.attachEvent("onresize",   iframeAutoFit);
     }
    else
    {
         window.addEventListener('load',   iframeAutoFit,  false);
         window.addEventListener('resize',   iframeAutoFit,  false);
     }
    //-->
     </ script >   
</ head >   
< body style ="overflow:hidden;border:0px" >
     < table border ="1" width ="200" style ="height: 200px;width:300px;" >
         < tr >
             < td > iframe   自适应其加载的网页(多浏览器兼容，支持XHTML) </ td >
         </ tr >
     </ table >
</ body >   
</ html >