How to use Facebook API to get the name of a friend

[SedygypeBredy]

Let's say I was able to get the id of a friend. (That unique number that everyone has on Facebook.)How can I display the name of that friend?I want to make a javascript alert box like this.\[code\]<script type="Javascript/text">function showname(id){alert("The name of your friend with id " + id + " is " + name)}</script>\[/code\]In the above example, how would I get their name into the name variable?