function clearDefault(el) {
  if (el.defaultValue==el.value) el.value = ""
}

(function($){
	$(document).ready(function() {
		
		$('.become-member-icon').hover(
			function(event) {
				this.src = '/images/membership_on.png';
			},
			function(event) {
				this.src = '/images/membership_off.png';
			}
		);
	});
})(jQuery);