gistfile1.js

/**
 * @author rajesh gollapudi
 */
$(document).ready(function(){
    placeFooter();
    $(function(){
        $(window).resize(function(){
        //    console.log('You resized the window!');
			if ($('#footer-spacer').length) {
				$('#footer-spacer').remove();
			}
            placeFooter();
        });
    });
});
function placeFooter(){
    // console.log("window height: " + $(window).height());
    var bottom = $('#footer').position().top + $('#footer').height();
    // console.log("footer position: " + bottom);
    if (bottom < $(window).height()) {
		
        var diff = $(window).height() - bottom;
        // We need to add bottom padding to this difference. This is to push the footer up a little bit, if the footer has any padding defined. 
        var padding = parseInt($('#footer').css('padding-bottom')) + parseInt($('#footer').css('padding-top'));
        diff = diff - padding;
		
		
			$('#footer').before("<div id='footer-spacer' style='height:" + diff + "px;'></div>");
	}
}