$(function(){
	$('.menu .active a span').each(function(){
		var offset = $(this).offset();
		var image = $('#wrapper').css('background-image').replace(/["]+/ig, '');
		
		image = image.replace('white', 'blue');
		
		$(this).css({'background': '#26303b '+image+' no-repeat 0 -'+offset.top+'px'});
	});
});