Tabele Style dont works in IE8 and Safari

Hi,

we have a problem with the table style in this Template.
the table lines between colums and rows in Firefox are OK. But if we use IE or Safari
the lines are not visible.

If we generate a onwn style in the editor we have the same problem.

In other templates it works.

we must import many tables from a old website into the new website.

a example you can see under http://www.jabuula.org/index.php?option ... &Itemid=57

The table on the top of the site are a table with copy and paste.
the second table are own style

please look with firefox and IE to see the different.

we will open the domain until 05.feb.2011

Please help to fix it.

Best regards
Michael