Made here my first extension for Opera -
Dollar Rate .

I did it for myself, but I thought it would be useful for many habrauser.
')
Data on Forex and WebMoney change every 5 minutes. According to the Central Bank of the Russian Federation once a day.
On weekends, the rate changes only to WebMoney, Forex and the CBR rest.
WebMoney exchange rate is taken from their domestic currency exchange - wm.exchanger.ru
In parentheses indicate the difference with yesterday's noon.
Now you don’t have to go to three sites to see the trend.
One click and you know;)