gistfile1.js

void function(){

   var images = {} // where we're keeping our images

   function image_callback(i){ 
       // copy any loaded images over to the images object
       for ( var prop in i ) {
            images[prop] = i[prop] 
       }

       // DO WHATEVER LOGIC YOU NEED TO DO ONLOAD -- important! it must go here.
   }

   load_images({ ground: "images/ground.png" }, image_callback)

   load_image({ player: "images/player.png", blah: "foo.jpg" }, image_callback)



}()