/**
 * 
 * rollovers
 * whatever is matched will have preload / rollovers applied to it
 */
jQuery.fn.rollovers = function() {
	this.each(function() {
		var over = jQuery(this).attr('src').replace('_off', '_over');
		var over_img = new Image();
		over_img.src = over;
		
		jQuery(this).hover(
			// over
			function() {
				var over = jQuery(this).attr('src').replace('_off', '_over');
				jQuery(this).attr('src', over);
			},
			
			// off
			function() {
				var off = jQuery(this).attr('src').replace('_over', '_off');
				jQuery(this).attr('src', off);
			}
		);
	});
};