How to make simple banner rotation?

[FractalizeR]

In VBulletin3 I did something like this:

global_start plugin:
$fr_bannerId = mt_rand(1,6);
$fr_bannerURL = "http://www.gsmforum.ru/images/ownpictures/". $fr_bannerId .'.swf';


ad_header_logo template
<object width="500" height="90">
<param name="movie" value="$fr_bannerURL">
<embed src="$fr_bannerURL" width="500" height="90">
</embed>
</object>



But in VB4 it no longer works, of course. Moreover,

class_bootstrap.php, Line 289

// advertising location setup
$ad_location['ad_header_logo'] = vB_Template::create('ad_header_logo')->render();


It seems, now the contents of advertisement templates can't be dynamically generated because template is rendered automatically and there is no way to insert vB_Template::register() call.

Can someone suggest an easy way to have simple banner rotation inside advertisement templates like I did in VB3, but in VB4?

[Videx]

If you really must code it yourself, then I don't know. But if you're willing to use a mod, this one works for me:
Rotating Banner System (https://vborg.vbsupport.ru/showthread.php?t=188328)

[FractalizeR]

Thanks, I will look ;)