Your question really has nothing to do with Perl at all. However, I did notice that the script tag you are outputting is incorrect, so the browser is never even loading your javascript file to begin with.

To detect such glitches, you can always validate your HTML output.

Another possibility is to produce xhtml and send a proper header, so that browsers display the page in "standards compliance mode" and complains about invalid xhtml. At least Firefox does.

1) Javascript stuff should not go into the cgi-bin directory. It should either be in the html directory, or a subdirectory under html. In other words, if you have an html file containing a line like src="script.js", script.js needs to be in the same directory as the html (just like image files in IMG src tags).

2) Java and javascript are two totally different things - it is unfortunate that they have similar names. Installing java will not help your javascript in any way, shape, or form.

3) Javascript is an interpreted language, but the interpreter is not on your server - it's built into the client-side browser. Since different browsers have slightly different implementations, it can be difficult to write javascript that does the same thing on multiple platforms.

Try this:

print qq{<script type="text/javascript" src="ncbi.js"></script>};
[download]

Hello,

I changed this line in the header as you suggested but it still not working. THe code I got this from is at:
http://nsaunders.wordpress.com/2007/02/20/my-first-ajax-for-bioinformatics-page/
I have only modified the last script from PHP to PERL and changed the location where the script is called. Any help would be appreciated.

Thanks.

If you have JS-file in your cgi-bin directory (but it's a bad idea as others pointed) the line should be:

print qq{<script type="text/javascript" src="/cgi-bin/ncbi.js"></scrip
+t>};
[download]

Also take a look at CGI.pm it's make life easy.