In order to open the JavaScript Console from within K-Meleon, enter (note, a macro could be written to open it from a menu):
javascript:
OR
chrome://global/content/console.xul
The documentation showing various pages of 'information' from within K-Meleon, see:
http://kmeleon.freewebsites.com/kmeleon-manual/about-option.html
Hope this helps.
SlideRule