[horde] PNG transparency problems

[Orange Side]

Hello, first of all sorry for my english, I'm spanish :)
We have problems with the png's transparency in IE6. Normally we apply this
patch*, but in this case doesn't work.
I see other themes using png's with transparency and seems to be a general
solution at /js/alphaImageLoader.php, but that doesn't work too.

Any idea ?
Than you very much

Borja Delgado

*http://www.twinhelix.com/css/iepngfix/