imgur

example

$(".preload").each( function(){
	var image_path = $(this).data('image')
	
	$(this).imgur({
		img: image_path
	}, function(el, data){
		$(el).css({
			'background-image': 'url('+data+)'
		})
	})
})

imgur.jquery.js

jQuery(function($) {

	$.fn.imgur = function(options, loaded) {
		var defaults = {
			img: ''
		}

		if (loaded) {
			var callback = {
				loaded: loaded
			}
		}

		return this.each(function() {

			var settings = $.extend(defaults, options);
			var callbacks = $.extend(callback, loaded);

			var $this = $(this);

			function init() {
				if (callbacks.loaded != null) {
					var _image = new Image();
					_image.onLoad = loaded();
					_image.src = settings.img;
				}
			}

			function loaded() {
				if (callbacks.loaded != null) {
					callbacks.loaded($this, settings.img);
				}
			}
			init();
		});
	};

});