All I'm trying to do is set up a simple slide show using the commands Start,Pause,Faster and Slower to go through a couple slides but I'm having trouble getting it set up.

<html>

<head>
    <script type="text\javascript">
     var showing=null,   // Is the showing going? no - null
    pause=true,     // Does the pause button say pause
    start=true,     // Does the start button say start
    current_pic=0,  // Current picture on the screen
    pics=[ // Pictures
        "Baybridge.jpg",
        "Bridgenight.jpg",
        "Brooklynbridge.jpg"
        "SFbridge.jpg"
         ],
    max_pics=pics.length, // Number of pictures
    interval_start=1000, // Default starting interval
    interval=interval_start, // Current interval
    interval_change=200; // Incremental interval changes
/************************************************************
*                               *
* Function: show                        *
* Show the next picture                     *
*                               *
* Parameters: None                      *
*                               *
* Return : None                         *
*                               *
************************************************************/
function show()
    {
     current_pic++;
    if (current_pic>=max_pics) current_pic=0; // cycle back
    document.getElementById("image").src=pics "Baybridge.jpg" ;
       }

/************************************************************
*                               *
* Function:     show_start_stop                     *
*       Start/Stop the show                 *
*                               *
* Parameters: None                      *
*                               *
* Return :    None                      *
*                               *
************************************************************/
function show_start_stop()
    {
        if (start)
    {
    showing=setInterval("show()", interval);
    start=false;
    document.getElementById("start").value="Stop";
    }
        else        // button say stop
    {
    clearInterval(showing);
    showing=null;
    pause=true;
    document.getElementById("pause").value="Pause";
    start=true
    document.getElementById("start").value="Start";
    interval=interval_start;
       current_pic=0;
       document.getElementById("image").src=pics"Baybridge.jpg";
       }
       }

/************************************************************
*                                   *
* Function:     show_pause_continue                 *
*       Pause or continue the show              *
*                               *
* Parameters:    None                       *
*                               *
* Return :   None                       *
*                               *
************************************************************/
       function show_pause_continue()
    {
        if(showing==null) return;   // Show going?
      if(pause)             // Button say pause?
        {
        clearInterval(showing);
            pause=false;
           document.getElementById("pause").value="Continue";
        }
       else             // Button say continue
        {
        showing=setInterval("show()", interval);
            pause=true;
      document.getElementById("pause").value="Pause";
        }
         }
/************************************************************
*                               *
* Function: show_faster                     *
* Reduce the interval between pictures              *
*                               *
* Parameters: None                      *
*                               *
* Return : None                         *
*                                   *
************************************************************/
function show_faster()
  {
   if (showing == null) return;     // Show going on?
   if (interval<=interval_change) return;    // Too slow already?
    interval-=interval_change;
    clearInterval(showing);
   if (pause==false) return;            // Pausing?
   showing=setInterval("show()", interval);     // Continue
   }
/************************************************************
*                               *
* Function: show_slower                     *
* Increase the interval between pictures            *
*                               *
* Parameters: None                      *
*                               *
* Return : None                         *
*                                   *
************************************************************/
function show_slower()
{
if (showing == null) return; // Show going on?
interval+=interval_change;
clearInterval(showing);
if (pause==false) return; // Pausing?
showing=setInterval("show()", interval); // Continue
}
</script>
</head>

<body>
<!Image>
<img id="image" src="Baybridge.jpg" height=400 width=400> <br />
<! Buttons >
<form>
<input type=button name="start" value=Start
    onclick="show_start_stop();">
<input type=button name="pause" value=Pause
    onclick="show_pause_continue();">
<input type=button value=Faster onclick="show_faster();">
<input type=button value=Slower onclick="show_slower();">
</form>
</body>
</html>

The structure of the code is basically fine. It just needs debugging and tidying up.

Your browser's error console (or error messages) will help you.

Airshow