Wikipedia/Magic Button

I have created for myself a little Wikipedia button in my browser that I find very useful. I want to share it with you now. It works perfectly for me in Netscape under Linux, but I assume there will be a few minor problems with Windows and IE.

(Also, I'm testing how to put this on the page here.)

[javascript:q=document.getSelection();for(i=0;i<frames.length;i++){q=frames[i].document.getSelection();if(q)break;}if(!q)void(q=prompt('Enter text to search using Wikipedia. You can also highlight a word on this web page before clicking Wikipedia.',''));if(q)location.href='http://www.wikipedia.com/search.fcgi?client=magic_button&request='+escape(q)]

Just drag this link up to your navigation toolbar

Then, you can go to any web page, highlight any text of interest, click the button and magically search on Wikipedia for that text.