condition using part of a URL

[Al Finlay]

javascript:(function(){l='http://www.pchelpforum.com/xf/'; 
if(location!=l)location=l; else{f0=document.forms[0]; 
f0['login'].value='Bananaman'; 
f0['password'].value='Eric'; 
document.getElementById('login').submit();}})()

Hi. I'm wondering if it's possible to write a condition, similar to the one above, but which evaluates to true if the first part of the URL is a match. For example, if the URL was http:\\www.greenhorn.com\thread3354 and I want to test for just http:\\www.greenhorn.com. In relation to the location property. Thanks in advance.

[Paul Clapham]

You mean take one string and see if a second string starts with the contents of that first string? Sure, I don't see why not. The basic code is no more than 3 lines long.

[Al Finlay]

I was a bit mixed up. I didn't know if there was a property I could test or if I had to parse the string.

l=window.location.hostname;

Thanks!