Drop-down and multiselect lists not showing in IE

Hi,

I've been building a website where the drop-down and multiselect lists do not work on IE 6-8.
See here the example (using IE!):
cbma.bio.uminho.pt/index.php?option=com_comprofiler&task=registers

They work perfectly on Safari, Chrome and Firefox.
Is it a problem with CB or the template of the website? :dry:
I'm using version 1.4 on this website.

Can anyone help me? How can I solve this?

Thanks in advance!

Please test using default Joomla template.