actionscript 3 - SharedObject, clicking every users button -

i have imageslider.swf , has 2 buttons. nextbtn pass next image , prevbtn go previous image. swf slide share app. want when presenter press of button, every slide show change( on every clients). happen on internet.not on localnetwork.

import flash.display.loader; import flash.net.urlrequest; import flash.events.event; import flash.events.mouseevent; import fl.transitions.tween; import fl.transitions.easing.*; import flash.filters.glowfilter; import flash.filters.dropshadowfilter; import flash.utils.timer; import flash.events.timerevent;     //*****************declaring variables*****************************//  //the array has picture labels var myarray:array = ["barbecued chicken", "bread & rolls", "burger", "chicken chilly" , "awesome fish"]; var myglow:glowfilter = new glowfilter(0xffffff,1,10,10,255);// saving glow var myshadow:dropshadowfilter = new dropshadowfilter(6);// saving shadow applied later var totalimages=11; var imagenumber=1; var mytimer:timer = new timer(4000);// 4 second timer var myloader:loader = new loader();   //************fetching pictures lying in external folder********************//  var myrequest:urlrequest = new urlrequest("images/"+imagenumber+".jpg"); myloader.load(myrequest); addchildat(myloader,1);// added under buttons layer on texture  //************centering pics , applying border , drop shadow****************//  myloader.contentloaderinfo.addeventlistener(event.init, getimageinfo); function getimageinfo(event:event){     var imgx=(stage.stagewidth- myloader.width)/2;     var imgy=(stage.stageheight- myloader.height)/2;     myloader.x=imgx;     myloader.y = imgy;// lines 37,38,39 & 40 centering loader formulae     myloader.filters = [myglow, myshadow];// adding white color glow / grey shadow     var mytween:tween = new tween(myloader, "alpha", none.easenone, 0,1,2,true);//apply fade in      } //**************automatic progression ********************************//  mytimer.addeventlistener(timerevent.timer, autoadvance); function autoadvance(event:timerevent){     if(imagenumber<totalimages){imagenumber++}     else (imagenumber=1);     reload();    } mytimer.start();  //**************going next image********************************//  rightbutton.addeventlistener(mouseevent.click, nextimage); function nextimage(event:mouseevent){     if(imagenumber<totalimages){imagenumber++}     else (imagenumber=1);     reload();         }     //**************going previous image********************************//  leftbutton.addeventlistener(mouseevent.click, previousimage); function previousimage(event:mouseevent){     if(imagenumber>1){imagenumber--}     else (imagenumber=totalimages);     reload();     }      //*****************controlling thumbnails****************************//  t1.addeventlistener(mouseevent.click, thumbhandler); t2.addeventlistener(mouseevent.click, thumbhandler); t3.addeventlistener(mouseevent.click, thumbhandler); t4.addeventlistener(mouseevent.click, thumbhandler); t5.addeventlistener(mouseevent.click, thumbhandler);  function thumbhandler(event:mouseevent){          if(event.currenttarget==t1){imagenumber=1}         else    if(event.currenttarget==t2){imagenumber=2}         else  if(event.currenttarget==t3){imagenumber=3}         else  if(event.currenttarget==t4){imagenumber=4}         else{imagenumber=5}         reload();     }      //**************replacing old image new ********************************//  function reload(){     removechild(myloader);     myrequest= new urlrequest("images/"+imagenumber+".jpg");     myloader.load(myrequest);     addchildat(myloader,1);     //changing label , tweening 3     mylabel.picturelabel.text = myarray[imagenumber-1];     var tweenlabel:tween = new tween(mylabel, "rotation", bounce.easeout,  360, 390,1,true)     }  //***************playing music placed externally*******************************// var my_sound:sound = new sound(); my_sound.load(new urlrequest("soothing_music.mp3")); var my_channel:soundchannel = new soundchannel(); my_channel = my_sound.play(0,9999);// 9999 number of times music should loop.      //*********detecting if mouse on stage stop/resume timer***********//     //stopping timer.     stage.addeventlistener(mouseevent.mouse_move, stop_the_timer);     function stop_the_timer(event:mouseevent){     mytimer.stop();     }     //resume timer     stage.addeventlistener(event.mouse_leave, resumetimer);     function resumetimer(event:event){     mytimer.start();     }