;jQuery.rollover || (function($) {
	$.fn.rollover = function(settings) {
		settings = jQuery.extend({
			suffixFrom: '_off.',
			suffixTo: '_on.'
		}, settings);
		var img = document.createElement('img');
		
		return this.each(function() {
			var srcOrig = this.src;
			var srcHover = this.src.replace(settings.suffixFrom,settings.suffixTo);
			img.src = srcHover;
			$(this).hover(function() {
				this.src = srcHover;
			}, function() {
				this.src = srcOrig;
			});
		});
	};
})(jQuery);