plz plz help me cant find a way

[hotice47]

Hi all,

I have a been developing an chat website using PHP,Mysql and flash. I have implemented everything.

I don't know much about AJAX My requirement is to devise a way of updating (in real-time) the current userlist and on clicking on the button it pass one user to flash at random so thay can chat withother.

Does anyone know of a method or technique to achieve a similar functionality? ANY help is much appreciated!

here is the code which is used to get userlist form database and javascript which will pass the one user.

<?php
                    if ($Member=='Member')
                        {
                            $i=0;
                            while ($i < $num) 
                                {

                                    $f1=mysql_result($result,$i,"MemberUserName");
                                    //echo $f1;

                ?>
                                    <a href="#" onclick="setCurrentUser('<?php echo $f1; ?>');"><?php if ($f1==$user) {} else {echo $f1;}  ?></a><br/>
                <?php
                                    $i++;
                                }

and here is the JavaScript

function flashGetHref() { return location.href; }
				function flashPutHref(href) { location.href = href; }
				function flashGetTitle() { return document.title; }
				function flashPutTitle(title) { document.title = title; }

				var isMovieLoaded = false;

				function MovieLoaded()
				{
					alert("movie loaded....!");
					isMoiveLoaded = true;
				}

				function setCurrentUser (userName)
					{	
						if (isMoiveLoaded = true)
						{ 	
							if (navigator.appName.indexOf("Microsoft") != -1)
							{
								alert("Welcome");
								document.getElementById('chatApp').SendUserName(userName);
							}
							else
							{
								document.chatApp.SendUserName(userName);
								//alert ("let the flash content load firt please");
							}
						}
						else
						{
							alert ("let the flash content load firt please");
						}
					}

i just need to update userlist auto after 15 seconds and random user can be selected .

Thanks,
hotice47