i have a solution to over come the problem in FF.
Look for the next line:
Code:
<div id="beeldplaatsing" style="width:1px;height:1px"></div>
you can find it at the bottom of the mod. Change the width and height pixels to the values of your largest image. This wil solve the problem i think, i cannot test it because i dont have FF. Let me know if this works...
When you change it to suit it. There will be an empty space as large as your largest image.