JQUERY HELP

JQUERY HELP

Hello Everyone,
                           I am new at JQUERY.
                        But it seems to be fun to work using jquery  But I've a problem in selecting a default value using jquery.
         
                I want that after successful submission of data into the database. All the values in the textboxes should be cleared( I did it using  :-       $("#id_email").attr("value","");      )  . Similarly, I want that the dropdownlist  should display the default value "--SELECT--". What should I do?

Please help me.
 
Thanks,
Smarjit