Event.observe(window, 'load', function() {
	$('top_head_search_input').observe('focus', function(event) {
		var obj = Event.element(event);
		obj.setStyle( {
			backgroundColor : "#E5FFD3"
		});
	});
	$('top_head_search_input').observe('blur', function(event) {
		var obj = Event.element(event);
		obj.setStyle( {
			backgroundColor : "#FFF"
		});
	});
});