(function($)
		{
				var cache =[];

				$.preLoadImages = function() {
						var args_len = arguments.length;
						for (var i = args_len; i--;) {
								var cacheImage = document.createElement('img');
								cacheImage.src = arguments[i];
								cache.push(cacheImage);
						}
				}
		}
)(jQuery)

jQuery.preLoadImages("images/grila1.png","images/grila2.png","images/grila3.png","images/grila4.png","images/grila5.png","images/grila6.png","images/grila7.png");