Here's an alternative version to search webster for a word definition. Enter the following bookmark defintion as one line with no spaces at all between characters:
javascript:x=escape(getSelection());window.location=
'http://www.webster.com/cgi-bin/dictionary?book=dictionary&va='+x;
[robg adds: The submitted hint also included a JavaScript to search Google for the selected text, but it's somewhat redundant -- you can just control-click on any selected text and choose Google search. However, for completeness sake, here's the Google JavaScript:
javascript:x=escape(getSelection());window.location= 'http://www.google.com/search?q='+x;Again, enter it as one line without any spaces at all.]

