debugging advice

Hi
    I have an HTML page that loads 3 or 4 JS files under some conditions it
gives a script error on line 100 the html is only 10 or so lines long. So
when working out which line is in error do I count each line in each JS file
in order from the point at which they are loaded?

is there an app that would do that for me?

thanks
Received on Mon Nov 21 03:23:33 2005