// cache buster 
var t = (new Date).getTime();
		
var the_images = [];

the_images.push( 'i/bg-header.png?i=1&t=' + t );
the_images.push( 'i/bg-world.png?i=2&t=' + t );
the_images.push( 'i/sprite.png?i=3&t=' + t );
the_images.push( 'i/bg.jpg?i=4&t=' + t );

jQuery.imgpreload(the_images, {
	each: function() {
		var pattern = new RegExp( "i=(\\d)", "gi" );
		var m = pattern.exec($(this).attr('src'));
	}
});