First of all, thanks to Fahim vai, he gave me the idea first...
This is a very easy way to add a cool bookmark item on your browser which can easily locate UVa, SPOJ & TopCoder problems for you. After you follow these steps, you will be able to open any UVa / SPOJ problem with just a click, you even do not need to enter any web address !
Now, after clicking "Add", you will see a new bookmark item has been added to your browser's toolbar, just click on it and enter the problem number.. that's it!
Click "Add" and done!. Now you will get a similar bookmark item as the previous one. But as you know, spoj problems are recognized with their codnames, not numbers. So enter a code name in the textbox, don't bother about case, and click ok. It will open the page of the problem if it is there. For example, to open the problem "Longest Common Substring", it has a codename LCS, you should enter "LCS" in the box, (not necessarily all should be uppercase).
As these will open in current window, make sure you open a new tab before using these to save some back, forward clicks ><><><
Have Fun !!!