Banner with click thru generate "0" on the end of URL

Hello,

I have made banner with click thru for counting clicks. But the servis of the serever, where I want to put the banner, still giving me back, because the url whitch they set on it generate on the end "0", so it doesnt work. (for example www.adress.com/0 )

I checked all the layers, and only script whitch I have there is the click thru, nothing more. I'am not flash expert, but I made some similer banners before and there were no troubles.

The click thru look like this:

on (release) {

if (_root.clickthru==undefined && _root.clickTag) {

_root.clickthru = _root.clickTag;

}

if (_root.clickthru==undefined && _root.clickTAG) {

_root.clickthru = _root.clickTAG;

}

if ( _root.clickTarget ==undefined) {

_root.clickTarget = "_top";

}

getURL(_root.clickthru, _root.clickTarget);

}

Please, do you have some idea, where can be the trouble? I think, it must be on the server owner side, but I really don't know.

Thanks, Jakub.