Urgent how to trim the spaces that in the text fileds?

Hi ,

I have an email field .If a  person enter the value in to the field along with space i need to validate that field by removing spaces.

I already have validation for this email field as shown below..

function isEmailValid(fld){

                    var result = true;

                    if(fld != null){

                              var r = new RegExp();

                        r.compile("^[a-z0-9_\\-\\.\\']+\\@[a-z0-9_\\-\\.]+\\.[a-z]{2,4}$","i" );

                              result = r.test(fld.rawValue);

                    }

                    return result;

          }

suggest the best how i will do that

Thanks in advance

Bharathi