These are just browser problems all works fine on opera mini 5.1 and above on mobile phones and mozilla firefox 4 beta on PC.

However sometimes such issues happened to me in opera mini 4.2, Bolt Browser and other old browsers. I simply suggest to upgrade your browser to the latest one. If that doesn't make it good then simply download opera mini 5.1 or firefox. And if that too doesn't run on your device then buy some better phone, as your phone may not be supporting latest browsers and their features, which is causing above said problems.