Preload set of images using jQuery Deferreds

gistfile1.js

var preloadImgs = function(srcs) {
	srcs = !$.isArray(srcs) ? [srcs] : srcs;
	
	var dfd = $.Deferred(),
		promises = [],
		img,
		len = srcs.length,
		defer,
		i = 0;
	
	for (; i < len; i++) {
		defer = $.Deferred();
		img = $('<img />');
							
		img.load(defer.resolve).error(defer.resolve);
		
		promises.push(defer);
		
		img.get(0).src = srcs[i];
	}
	
	$.when.apply($, promises).done(dfd.resolve);
	
	return dfd.promise();
};

// Usage:

// Define some image URLs.
var imgs = [
	"http://farm7.staticflickr.com/6091/6351031496_5a3a911905_b.jpg",
	"http://farm7.staticflickr.com/6114/6350286799_fafd141b55_b.jpg",
	"http://farm7.staticflickr.com/6038/6350286603_bc11e458f0_b.jpg",
	"http://farm7.staticflickr.com/6106/6350286099_372bfe2cfa_b.jpg",
	"http://farm7.staticflickr.com/6040/6350285637_114c94a159_b.jpg",
	"http://farm7.staticflickr.com/6054/6351029458_664c6cf313_b.jpg"
];

$.when(preloadImgs(imgs))
	.then(function() { // Success.
		// Win!
	},
	function() // Error
		// Fail.
	});