510352 Firefox Addon Compatibility -3

I need someone to make this attached add-on compatible with the firefox 5.0, it was working fine in firefox 3.5, I need someone to make some basic changes and make it working in FF 5.0, its language dictonary, when activated in the FF task bar with a mouse click, and you mouse over a English word, it will show the sin language word, in popup, when not needed we can deactivated clicking the icon in the FF task bar. (like the firebug addon) attached is the version i have, please have look and let me know..