/*
 * Copyright 2005, Peter Rowntree. All Rights Reserved.
 * http://www.hdyn.com/wr/common/contact.php?addr=pr
 */
 
var g_currentSet=-1;

function start()
{
   if(g_currentSet >= 0)
      g_slideSets[g_currentSet].start();
}

function stop()
{
   if(g_currentSet >= 0)
      g_slideSets[g_currentSet].stop();
}

function prev()
{
   if(g_currentSet >= 0)
      g_slideSets[g_currentSet].prev();
}

function next()
{
   if(g_currentSet >= 0)
      g_slideSets[g_currentSet].next();
}

function toggleRun()
{
   if(g_currentSet >= 0)
   {
      var uiOb=document.getElementById('runBtn');
      var ss=g_slideSets[g_currentSet];
      if(ss.flags & 16)
      {
         ss.stop();
         uiOb.src="images/start.gif";
         uiOb.title="start (space bar)";
      }
      else
      {
         ss.start();
         uiOb.src="images/stop.gif";
         uiOb.title="stop (space bar)";
      }
   }
}

function doKeyDown(e)
{
   if(!e)
      e=window.event;
   var k=0;
   if(typeof e.keyCode != 'undefined')
      k=e.keyCode;
   else if(typeof e.which != 'undefined')
      k=e.which;
   else
   	return true;
   switch(k)
   {
      case 37:
      	prev();
      	break;
      case 32:
      	toggleRun();
      	break;
      case 39:
      	next();
      	break;
      default:
			return true;
   }
   //alert(k);
   return false;
}

function reportEvent(s)
{
   var destOb=document.getElementById('events');
   destOb.innerHTML+=s+"<br/>";
   destOb.scrollTop=32000;
}