Here is the script I made (probably not the best, but it might work...). Put this in the head section:
I gave some comments in there to help you find out why I named some of the variables why I did. And remember you can change those variables to something easier to remember!
var aw = window.screen.availWidth //gets the available width ([B]A[/B]vailable [B]W[/B]idth)
var cw = aw/2 //divides the width by 2 ([B]C[/B]enter [B]W[/B]idth)
var pw = cw - 150 //you need to change the last number to the
//distance you need your image to be from the
//center of the screen
Then put this in the body section:
Okay, so I have tried this in the following browsers:
document.write("<div style='position: absolute; left:" + pw + "; top: 105;'>")
It is worked in all of those. But like I said I am not a very top-of-the-line js programmer so hopefully we can get some xperts over here to maybe check out the script i made! But as far as I know this should work. Good luck!!!