Preloader not loading on second click?

Question

Hello, i use an action for preloading a movieclip on my website and it works the first time it downloads, but when you click on the gallery again, it doesnt load, but just shows the start of the preloader.
Can you see what could be wrong in the script, or if the problem is elsewhere?
The site:
[link removed at poster's request]
You can see the problem if you click on "Talk Show Hosts", wait untill it loads, click clients and then back to "Talk Show Hosts".
Now it doesnt load, and its the same with the other galleries.
The site works by loading an external swf file with the UILoader, the swf that is loaded is a ScrollPane that loads a Movieclip.
Would be really happy about a solution to my problem =)
Thank you!
stop();
//Preloader
loaderInfo.addEventListener(ProgressEvent.PROGRESS, updatePreloader);
function updatePreloader(evtObj:ProgressEvent):void
    //container for the progress of the site (download)
    var percent:Number = Math.floor((evtObj.bytesLoaded*100)/evtObj.bytesTotal);
    preloader_txt.text = percent+"%";
    if (percent==100){
        nextFrame();

Answer 1

loading is complete (because of cache retrieval of your file) when your loader is displayed.  so, no progressevent is dispatched.  to remedy,
stop();
var loadCompleteBool:Boolean;
if(loadCompleteBool){
nextFrame();
//Preloader
loaderInfo.addEventListener(ProgressEvent.PROGRESS, updatePreloader);
function updatePreloader(evtObj:ProgressEvent):void
    //container for the progress of the site (download)
    var percent:Number = Math.floor((evtObj.bytesLoaded*100)/evtObj.bytesTotal);
    preloader_txt.text = percent+"%";
    if (percent==100){
loadCompleteBool=true;
        nextFrame();