HIde word with JavaScript

I am not developer so I need help from you guys.

My Problem is simple.

I just want javascript to hide word before "."

Example :

say for google.com

I just want word ".com" tobe print.

Please note that my content is dynamic so google.com will keep changing everytime to google.net or yahoo.com...... so on..

Thanx in advanced.

Well, you didn't mention quite a lot, like how do you get your input? What to do if you have no dot, are many dots?
One simple solution is:

var s = 'before.after';
var pos = s.indexOf('.');
if(pos >= 0) // here, if I don't find a dot, keep s as it is.
   s = s.slice(pos);

alert(s); // .after

Here's a tutorial for you on how to parse URL's in Javascript. http://java-programming.suite101.com/article.cfm/how_to_get_url_parts_in_javascript

If the content you want to modify is in HTML content, the easiest way is to do string replace.

http://www.bradino.com/javascript/string-replace/

Before using replace, you should first locate the content, by its container ID or Name.

http://www.tizag.com/javascriptT/javascript-getelementbyid.php

http://www.eggheadcafe.com/community/aspnet/3/43154/getelementbyname.aspx

Hope this helps.