Select box/frames question

[alcodes]

I have a select box on my website, it is supposed to load the chosen page into the "main" frame, strangly, this works with Inline frames, but not with a frameset, my code is listed below:
Javascript:
function l(file){
window.main.location=file+".htm";}
Every option tag:
OnClick="l('foo')"
any suggestions?

[Khalid Ali]

instead of this
window.main.location=file+".htm";

use the following

parent.frameName.location.href = file+".html";