mozilla: test.html fix inputTracker usage

projects/mozilla/test.html

@@ -16,8 +16,11 @@
 <SCRIPT type="text/javascript" src="blueshoes-4.5/javascript/components/slider/Bs_Slider.class.js"></SCRIPT>
 
 <SCRIPT language="JavaScript"><!--
-function init(){
+function init()
+{
     inputTracker = new Bs_Slider();
+    if (inputTracker)
+    {
         inputTracker.attachOnChange(onInputTrackerChange);
         inputTracker.attachOnSlideStart(onInputTrackerScrollStart);
         inputTracker.attachOnSlideEnd(onInputTrackerScrollEnd);
@@ -35,6 +38,7 @@ function init(){
         inputTracker.setSliderIcon('aluminumalloyvolcanic/horizontal_knob.gif', 15, 19);
         inputTracker.useInputField = 0;
         inputTracker.draw('inputTrackerDiv');
+    }
 
     if( navigator.appName.indexOf("Microsoft Internet")==-1 )
     {
@@ -47,7 +51,8 @@ function init(){
     else
     {
         /* Explorer loads plugins asynchronously */
-        document.onreadystatechange=function() {
+        document.onreadystatechange=function()
+        {
             if( document.readyState == 'complete' )
             {
                 onVLCPluginReady();
@@ -219,6 +224,7 @@ var rate = 0;
 var prevState = 0;
 var monitorTimerId = 0;
 var rateTimerId = 0;
+var inputTracker;
 var inputTrackerScrolling = false;
 var inputTrackerIgnoreChange = false;
 var telxState = false;
@@ -677,7 +683,7 @@ var liveFeedRoll = 0;
 
 function onPlaying()
 {
-    if( ! inputTrackerScrolling )
+    if( !inputTrackerScrolling )
     {
         var vlc = getVLC("vlc");
         var info = document.getElementById("info");
@@ -686,23 +692,29 @@ function onPlaying()
         if( mediaLen > 0 )
         {
             // seekable media
+            if( inputTracker )
+            {
                 if( inputTracker.maxVal == 1.0 )
                 {
                     inputTracker.setDisabled(false);
                     inputTracker.maxVal = 1.0;
                 }
                 inputTracker.setValue(vlc.input.position);
+            }
             info.innerHTML = formatTime(vlc.input.time)+"/"+formatTime(mediaLen);
         }
         else
         {
             // non-seekable "live" media
+            if( inputTracker )
+            {
                 if( inputTracker.maxVal != 0.0 )
                 {
                     inputTracker.maxVal = 0.0;
                     inputTracker.setValue(0.0);
                     inputTracker.setDisabled(true);
                 }
+            }
             liveFeedRoll = liveFeedRoll & 3;
             info.innerHTML = liveFeedText[liveFeedRoll++];
         }
@@ -721,11 +733,14 @@ function onStop()
     // disable logging
     vlc.log.verbosity = -1;
 
+    if( inputTracker )
+    {
         if( !inputTracker.disabled )
         {
             inputTracker.setValue(inputTracker.minVal);
             inputTracker.setDisabled(true);
         }
+    }
     document.getElementById("info").innerHTML = "-:--:--/-:--:--";
     document.getElementById("state").innerHTML = "Stopped...";
     document.getElementById("PlayOrPause").value = " Play ";