window.onresize = fix_height;

function fix_height() 
{

    var screen_height = get_screen_height();
    var frame_obj = document.getElementById("frame");
    frame_obj.height = screen_height - document.getElementById("topBar").clientHeight + "px";

    
    return false;
}

function get_screen_height() 
{
    var myHeight = 0;

    if (typeof (window.innerWidth) == 'number') {
        //Non-IE
        myHeight = window.innerHeight;
    } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
        //IE 6+ in 'standards compliant mode'
        myHeight = document.documentElement.clientHeight;
    } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
        //IE 4 compatible
        myHeight = document.body.clientHeight;
    }

    return myHeight;
}