[jQuery] Problem with script. !GreaseMonkey! Newbie.

[jQuery] Problem with script. !GreaseMonkey! Newbie.

  1. <div id="countrySelector" class="ssClosed">
    <a href="#" id="countryClicker" onclick='showCountries(); return false;'><span class='si'>United States of America</span></a>
    <div id="countryInner">
    <a href="#" onclick='selectCountry("US", this); return false;'><span class='si'>United States of America (USA)</ span></a>
Now... I dont know how to make that my script in GreaseMonkey will choose country. This html code is selection field. How to write code in jQuery to GreaseMonkey? I'm newbie and I need this script.