creating alink just for java script

[balingen tame]

I want to add  long java  script   to the onclick of a anchor , was
wondering if I do this using a Link , The reason  I want to use a link is I
can append the java script with the attribute modifier.My concern is , any
link will also adds   java script   to call the server , in this case I
want link to call just the java script and nothing more ,Can I do this ?