Non scrolling background

I have a question on getting the don't scroll background to work. I downloaded the tweaks package and im trying to create a website with just scrolling content or gliding content. I was wondering if anyone could give me a good tutorial on to implement it properly?

Rather than go through all the tweaks, here's one peice of head code to help out.
Demo attached.


[1] Prepare your background image and name it bg.jpg


[2] Select any object on your page and press SHIFT+CTRL+ALT+A to browse and select your bg.jpg


[3] In Web Properties>>Website click the HTML code (head) button and enter the CSS shown below. Then press apply.


Edit the CSS background color as required;
Remove the background position line for a centered background.
Remove the background repeat line for a tiling background.

Code:

---

<style type="text/css">
HTML
{
background-image:url('index_htm_files/bg.jpg');
background-attachment:fixed;
background-color:#0D0630;
background-repeat:no-repeat;
background-position:left top;
}
</style>

---

I dont know what Im doing wrong but I still have not been able to get this work, any other help you could give a newbie ;P

I can't really help you unless I can see what you have done to know what you've done wrong. Can you attach your xara file please :)