Chrome is currently the most used browser and it is only shame of WGT programmers, that they are not able to support it. It is not the Google's fault, webkit rendering kernel is working without any problems, in fact nowadays there are only two or three rendering kernels used, so it is not such a problem to develop web applications working in every major browser. There are still problems with older versions of IE (ver 7 and 8 and IE's compactibility mode), but I have problems sending PM's even in the IE10 (the message is sent, but it remains in the text box)...
Anyway, thank you all for your help, now we can only hope, that WGT hires some better staff (or sell the whole project to someone more competent)...
Sluny