window.addEvent('domready', function() {
	$('search_button').addEvent('mouseover', function() {
		$('search_button').setStyle('background-position', '-42px 0px');
	});
	$('search_button').addEvent('mouseout', function() {
		$('search_button').setStyle('background-position', '0px 0px');
	});
	$('search_button').addEvent('mousedown', function() {
		$('search_button').setStyle('background-position', '-84px 0px');
	});
	$('search_button').addEvent('mouseup', function() {
		$('search_button').setStyle('background-position', '-42px 0px');
	});
});