CRM 2013 - Javascript - Remove whitespace?

Hi

I have a field called Account Name - where the user will input an account name

The first 3 letters of that account name is used to create an account code

Sometimes though there may be spaces for example S H Limited

I want to be able to keep that as the account name - but trim out the whitespace for the account code

Any suggestions?

Thanks, Shaun

S.Harrison