I just expanderised the whole thing to have a look at how it works and there are some cool smallerizing tricks going on. Like the text that appears above the icons is actually the images alt tag ( title.innerHTML = k.getElementById( imagename ).alt ) . great idea.

Also the declaration of z = Array thats cool

I wonder if it was hand-smallerized, or via machiney, 'cause there is "x = false;" but no "y = true;" - true is only used a couple of times throughout the script.