function changeFrameHeight(){ var ifm= document.getElementById("myiframe"); ifm.height=document.documentElement.clientHeight; } window.onresize=functi... ...
<iframe src="index.html" width="100%" name="" id="myiframe" scrolling="no" onload="changeFrameHeight()" frameborder="0"></iframe>
function changeFrameHeight(){ var ifm= document.getElementById("myiframe"); ifm.height=document.documentElement.clientHeight; } window.onresize=function(){ changeFrameHeight(); }