$(document).ready(function() {
	
	$(".button-work-together img").hover(
		function () {
			var src = $(this).attr("src").match(/[^\.]+/) + "-mo.jpg";
			$(this).attr("src", newsrc);
		}, 
		function () {
			var src = $(this).attr("src").replace('-mo','');
			$(this).attr("src", newsrc);
		}
	);	
});