$(document).ready(function() {

	$("a.button1").hover(
	  function () {
		$(this).children().attr("src","i/button1-a.jpg");
	  },
	  function () {
		$(this).children().attr("src","i/button1.jpg");
	  }
	);
	
	$("a.button2").hover(
	  function () {
		$(this).children().attr("src","i/button2-a.jpg");
	  },
	  function () {
		$(this).children().attr("src","i/button2.jpg");
	  }
	);
	
});