$("input.search_btn").bind('mouseover',
	function (){
		$(this).attr("src","i/search_btn_h.gif");
	}
);
$("input.search_btn").bind('mouseout',
	function (){
		$(this).attr("src","i/search_btn.gif");
	}
);

$('u.hint').bind('click',
	function(){
		$('#s').val("Mad*");
	}
)