Select All doesn't fire listener UploadFileCountChange

	<script type="text/javascript" language="JavaScript">
		//This UploadFileCountChange event handler displays total size of all files selected for upload.
		function UploadFileSizeChange() {
			var imageUploader1 = getImageUploader("ImageUploader1");
			if (imageUploader1) {				
				var nbr = Math.ceil(imageUploader1.getTotalFileSize() / 1024);
				var nbrFmt = new NumberFormat(nbr);
				nbrFmt.setPlaces(0);
				nbrFmt.setSeparators(true);
				nbr = nbrFmt.toFormatted();
				
				document.getElementById("TotalSourceFileSize").value = nbr;
				document.getElementById("total_size").innerHTML = nbr + ' kb';
				UpdateCheckedItemAppearance();
			}
		}
			
		function UpdateItemAppearance() {
			var imageUploader = getImageUploader("ImageUploader1");    
 			var cnt = imageUploader.getPaneItemCount("FolderPane");
 
	    //Iterate through all items on the folder pane to check if the item satisfies your upload restrictions
	    for (var i = 1; i <= cnt; i++) {			        
        if (imageUploader.getPaneItemCanBeUploaded(i) == false) {     
          //If it does not, highlight it with red
          imageUploader.setPaneItemDesign("FolderPane", i, "ForegroundColor=red;" +
          "ForegroundOpacity=30;BorderLineStyleLeft=Dot;BorderLineStyleRight=Dot;" +
          "BorderLineStyleTop=Dot;BorderLineStyleBottom=Dot;BorderLineColorLeft=red;" +
          "BorderLineColorRight=red;BorderLineColorTop=red;BorderLineColorBottom=red");
     		}
 			}
		}
		
		function UpdateCheckedItemAppearance() {
	    var imageUploader = getImageUploader("ImageUploader1");				    
	    var cnt = imageUploader.getPaneItemCount("FolderPane");
 
	    //Iterate through all items on the folder pane and check if the item is going to be uploaded
	    for (var i = 1; i <= cnt; i++) {
    		if (imageUploader.getPaneItemChecked(i) == true) {        
          //If it is, highlight it with green
          imageUploader.setPaneItemDesign("FolderPane", i, "ForegroundColor=green;" +
          "ForegroundOpacity=30;BorderLineStyleLeft=Solid;BorderLineStyleRight=Solid;" +
          "BorderLineStyleTop=Solid;BorderLineStyleBottom=Solid;BorderLineColorLeft=green;" +
          "BorderLineColorRight=green;BorderLineColorTop=green;BorderLineColorBottom=green");
    		} else if (imageUploader.getPaneItemChecked(i) == false && imageUploader.getPaneItemCanBeUploaded(i) == true) {
          imageUploader.setPaneItemDesign("FolderPane", i, "ForegroundColor=white;" +
          "ForegroundOpacity=00;BorderLineStyleLeft=Solid;BorderLineStyleRight=Solid;" +
          "BorderLineStyleTop=Solid;BorderLineStyleBottom=Solid;BorderLineColorLeft=white;" +
          "BorderLineColorRight=white;BorderLineColorTop=white;BorderLineColorBottom=white");    			
    		}
			}
		}
		
		//Create JavaScript object that will embed Image Uploader to the page.
		var iu = new ImageUploaderWriter("ImageUploader1", 600, 400);
		
		//Change the default ButtonSendText Property
		iu.addParam("ButtonSendText", "Next");
		
		//For ActiveX control full path to CAB file (including file name) should be specified.
		iu.activeXControlCodeBase = "ImageUploader4.cab";
		iu.activeXControlVersion = "4,5,4,0";
		iu.activeXControlEnabled = false;
		
		//For Java applet only path to directory with JAR files should be specified (without file name).
		iu.javaAppletCodeBase = "/somedir/util/";
		iu.javaAppletCached = true;
		iu.javaAppletVersion = "2.5.4.0";
		iu.addParam("LicenseKey", "like i would post that!");
		
		iu.showNonemptyResponse = "off";
		iu.addParam("CheckFilesBySelectAllButton", "true");		

		iu.addParam("AutoRecoverMaxTriesCount", "3");
		iu.addParam("AutoRecoverTimeOut", "5000");
		
		//Configure appearance and behaviour.
		iu.addParam("PaneLayout", "TwoPanes");
		iu.addParam("ShowDebugWindow", "true");
		iu.addParam("ShowDescriptions", "true");
		iu.addParam("DescriptionsReadOnly", "true");
		iu.addParam("BackgroundColor", "#ffffff");
		
		//Configure Image Uploader to rotate photos automatically 
		//according to the orientation stored in EXIF metadata.
		iu.addParam("AllowAutoRotate", "true");
		
		//Append the form with total file size to the upload.
		iu.addParam("AdditionalFormName", "Form1");
		
		//Configure file mask to upload JPEG images only.
		iu.addParam("FileMask", "*.jpeg;*.jpg;*.jpe;*.pdf;*.doc;*.tif;*.tiff;*.gif;*.txt");
		
		//Set restrictions
		iu.addParam("MaxFileSize", "5242880");					
		
		//Set image size restrictions.
		iu.addParam("MinImageWidth", "0");
		iu.addParam("MinImageHeight", "0");
		
		//Exclude the source file from upload because only 
		//resized versions of the photo will be sent.
		iu.addParam("UploadSourceFile", "false");
		
		//Configure settings of the optimized image. Optimized image
		//is resized to 1200x1200 with JPEG quality = 60 and EXIF 
		//metadata is preserved.
		iu.addParam("UploadThumbnail1FitMode", "Fit");
		iu.addParam("UploadThumbnail1Width", "1280");
		iu.addParam("UploadThumbnail1Height", "1280");
		iu.addParam("UploadThumbnail1JpegQuality", "60");
		iu.addParam("uploadThumbnail1FallbackMode", "SourceFile");
		iu.addParam("UploadThumbnail1CopyExif", "true");
							
		//Configure thumbnail settings.
		iu.addParam("UploadThumbnail2FitMode", "Fit");
		iu.addParam("UploadThumbnail2Width", "320");
		iu.addParam("UploadThumbnail2Height", "320");
		iu.addParam("UploadThumbnail2JpegQuality", "60");
		
		//Configure URL files are uploaded to.
		iu.addParam("Action", "../..<%= ContextPath %>/FileUpload");
		// iu.addParam("Action", "upload.jsp");
		
		iu.addParam("RedirectUrl", "some.jsp");
		iu.addParam("MessageUploadCompleteText", "Your files have been uploaded. Click 'OK' to continue to step 2.");
		
		//Add event handlers.
		iu.fullPageLoadListenerName = "UpdateItemAppearance";
		iu.addEventListener("FolderChange", "UpdateItemAppearance");
		iu.addEventListener("UploadFileCountChange", "UploadFileSizeChange");	
		//This Progress event handler demonstrates an alternative way to 
		//redirect upon upload (instead of RedirectUrl property).
		function ImageUploader_Progress(Status, Progress, ValueMax, Value, StatusText) {
			if (Status == "COMPLETE") {
				window.location = 'some.jsp';  
			}
		}