function resize_iframe() {


    var height = window.innerWidth; //Firefox


    if (document.body.clientHeight)
        height = document.body.clientHeight; //IE

    document.getElementsByTagName("iframe")[0].style.height = parseInt(height -
   	document.getElementsByTagName("iframe")[0].offsetTop - 8) + "px";

    window.onresize = resize_iframe;



}

if (window.addEventListener)
    window.addEventListener("load", resize_iframe, false)
else if (window.attachEvent)
    window.attachEvent("onload", resize_iframe)
else
    window.onload = resize_iframe