$(document).ready(function(){

		$(function() {
		  $("#botonera img").hover(function() {
				$(this).attr("src", $(this).attr("src").split(".").join("-hover."));  // adds -hover to the name of the image
		  }, function() {
				$(this).stop(true,false); // prevents the creation of stacked actions
				$(this).attr("src", $(this).attr("src").split("-hover.").join("."));  // removes -hover from the name of the image
		  });
		});

		  }); // end docready