Picture shows up in my dropdown

Now then i have got mycombo plugin to work i get another fine problem

I have made so the user can chose pictures from my dbase with the combo.

First it shows the picuretext in the list (like its suposed to do)

see http://www.club-casa.com/before.jpg

But after chosing a item the picture shows up in the dropdown (and i dont want the picture, i want the picturetext)

see http://www.club-casa.com/after.jpg

Anyone know how to fix this?

Reguards
Anders