You can only jailbreak your device by, having a certain firmware such as 2.1., 3.1.3, and 4.3.3 if your firmware is to the latest, then you cannot jailbreaking your device via your browser... I think you have to use the computer to do so.. Which I'd recommend waiting, until a stable version of jailbreak software is released, which is till the approximately release of the iOS 7 to the public... Link: http://jailbreakme.com (3.1.3) http://jailbreakme.com/star (4.3.3) -Hope this helped!
Use JailbreakMe jailbreak by Comex to jailbreak your iPad. Go to www.JailbreakMe.com via your iPad and then tap the "Free" icon. Once the "Install" icon loads, tap it and Cydia will automatically install on your iPad. Reboot your device once you are done.