Messed up "totals"

Hi, I am using joomla 1.5.25 and hikashops 1.5.5
I have this problem: at the checkout screen, all prices are looking good, except "Total". If it's more than a 1000, it looks like this: "500,00 1". The first digit jumps to the end of the number. I am using rtl template and all numbers at my web site are fine. I am ataching an image of this problem