Problem With Ajax

I'am a New Programer of PHP and I use Ajax for better result of my web and i got tutor from the web but i got a problem there
http://www.efreesms.com/Ajax/test.php
this programing script use with Ajax But a Problem is that is use dropdown menu for this how i use link (text) for this purpose
plz help to tell me wht is the propertie of link for calling function thanks

 

I'll help as soon as I decrypt your question.

 

<a href="#" onclick="showUser(33)">Adult</a>
<a href="#" onclick="showUser(10)">Anniversary</a>
<a href="#" onclick="showUser(53)">April Fool Trick</a>
...

Code (markup):

 

ths yar mian kal sa parashan tha thank you very much

 

@Fadz:
Chaloo koyee baat nahi, ab tu pareeshani dooor ho gayee (thanks to krt)