$(document).ready(function () {
	pushFooter();
});

$(window).resize(pushFooter);

function pushFooter() {
    var header = $("header");
    var body = $("section");
    var footer = $("footer");
	
    var viewPort = document.documentElement.clientHeight;
    var pusherHeight = viewPort - header.height() - body.height() - footer.height()-52;
    if (pusherHeight > 0) {
        $("#footerPusher").css("height", pusherHeight + "px");
    }
}