internet banking from mobile

The browsers on the QTEK 9100 mobile phone are not upto doing internet banking: Tried to pay a bill from onlinesbi.com using both IE and Opera mini, but both failed at some point during the confirmation of the transaction. Some javascript issue I believe. Bandwidth usage - if images are turned off, seeing a couple of emails on gmail or going through to the login or some other screens on the bank site use less than 50 kB, so charged at 30 paise if using Airtel's GPRS network.