[RESOLVED] Made an image preload function, sometimes it doesn't work

[Technicolor]

Hi.
So I am working on building a site for my friend, and when I started working on it, I cam across a roadbump on the JS-enabled site -- I made it so it would show a loading screen for the website so it will preload some images (say, like, buttons, logo(s), etc), and when you type in localhost (it runs on my local server) without a hash, it works just fine, and when you reload the page when it DOES have a hash (part of the feature, when you reload a page with a hash, it will read the hash, and show you the content related to the hash (say #main will show you the main page)

I really can't pinpoint it, so I will dump the entire website JS file, and see if you can find anything that I am doing wrong.
Here are a few screenshots of what happens:

The site when loaded without a hash suffix (note that the hash automatically is placed on load)-
http://i.minus.com/ijHYCX8BZ2DxL.png
The site when reloaded or loaded WITH a hash suffix-
http://i.minus.com/iCbxKrKVUybdH.png

And here is the main.js file and a couple of HTML files for your reference to know what the document.getElementById is doing

the main.js, the content/initMain.html and the index.html files -
https://docs.google.com/folder/d/0By...ZCYnptek0/edit

[Technicolor]

Quick edit:
I noticed that the screenshots don't show the address -
the first one without the hash suffix is simply localhost (and on load, it turns into localhost/#main), while the one WITH the hash suffix is localhost/#main

[Technicolor]

Fixed: Basically, on the image preload array, I had images/bg.jpg, which is the background, and at the same time, I had images/bg.jpg for the background in CSS, so in essence, I was sending the request twice.
I just removed the images/bg.jpg from the CSS background section, and it started working again.