iframe框架高度随内容的变化而变化的代码。iframe src="XXX.htm" width="700px" frameborder="0" scrolling="no" marginheight="0" onload="AutoIframe()"/iframe

script type="text/javascript"

function AutoIframe()

{

if(document.readyState!='complete')

{

setTimeout( function(){AutoIframe();},25 );

return;

}

else

{

var ifobj=document.getElementById("frmsrc");

ifobj.height= ifobj.contentWindow.document.body.scrollHeight;

}

}

/script

//PS: XXX.htm不可跨域

iframe src="dd.html" name="frmMain" width="99%" height="100%" frameborder=0 scrolling=no marginHeight=0 marginWidth=0 onload="Javascript:SetWinHeight(this)" /iframe

function SetWinHeight(obj)

{

var win=obj;

if (document.getElementById)

{

if (win !window.opera)

{

if (win.contentDocument win.contentDocument.body.offsetHeight)

win.height = win.contentDocument.body.offsetHeight;

else if(win.Document win.Document.body.scrollHeight)

win.height = win.Document.body.scrollHeight;

}

}

}