AS: help with getURL

I’m having a strange problem with getURL.
in my flash file, i have two buttons one for an email link and another one for a site link
here is the code
getURL(, “_blank”);
// goes to the site

getURL(mailto:[email protected]);
// open outlook express to send an email to [email protected]

when i test it in flash (Ctr+enter) only the button linking to the site works, but the email button doesn’t work.
And when i preview it in html, only the the email button works, but the site button doesn’t work.
Does anyone know how can i make both buttons work properl?