$(document).ready(function(){
var h = $("body").height()-37 + "px";
var w = $(window).width() + "px";
$('#videoBackground').css("height", h);

$('#mainFrame').css("height", h);
$('#mainFrame').css("width",w);
});

window.onresize = function () {
    var h = $("body").height() - 37 + "px";
var w = $(window).width() + "px";
$('#videoBackground').css("height",h);

$('#mainFrame').css("height", h);
$('#mainFrame').css("width",w);
}