function pbplay(){
		
		if(document.getElementById('pbslide' + curframe).style.display==""){
		for(i=0;i<=4;i++){
			clearTimeout(timeouts[i]);
		}
		timeouts[0]=setTimeout("pbfade('pbslide" + curframe+"');", TimeToFade);
           
            if (curframe == end_frame) {
				oldframe=curframe;
				curframe=frame = start_frame; 
				} 
			else { 
				oldframe=curframe;
				curframe=frame = curframe + 1; 
				}
            timeouts[1]=setTimeout("pbfadein("+frame+","+oldframe+");", TimeToFade*2);
            timeouts[2]=setTimeout(pbswitch_slides(frame, delay), delay + 1000);
       
		}
		return false;
	}
   function pbswitchto(frame){
		if(document.getElementById('pbslide' + frame).style.display=="none" && document.getElementById('pbslide' + curframe).style.display==""){
		for(i=0;i<=4;i++){
			clearTimeout(timeouts[i]);
		}
		pbfade('pbslide'+curframe);
		
		timeouts[1]=setTimeout("pbfadein("+frame+","+curframe+");", TimeToFade);
        curframe=frame;
		//start_slideshow(frame, 3, 10000);
		}
		else{
			for(i=0;i<=4;i++){
			clearTimeout(timeouts[i]);
		}
		}
		return false;
	}
    function pbstart_slideshow(delay) {
        timeouts[0]=setTimeout(pbswitch_slides(start_frame, delay), delay);
    }
                            
    function pbswitch_slides(frame,  delay) {
        return (function() {
            pbfade('pbslide' + frame);
            if (frame == end_frame) {
				oldframe=frame;
				curframe=frame = start_frame; 
				} 
			else { 
				oldframe=frame;
				curframe=frame = frame + 1; 
				}
            timeouts[1]=setTimeout("pbfadein("+frame+","+oldframe+");", TimeToFade);
            timeouts[2]=setTimeout(pbswitch_slides(frame, delay), delay + 1000);
        })
    }
function pbfadein(frame,oldframe){
var element = document.getElementById('pbslide' + oldframe );
  if(element == null)
    return;
element.style.display="none";
var element = document.getElementById('pbslide_b' + oldframe );
  if(element == null)
    return;
element.src='images/button2.png';
var element = document.getElementById('pbslide_b' + frame );
  if(element == null)
    return;
element.src='images/button.png';
var element = document.getElementById('pbslide' + frame );
  if(element == null)
    return;
element.style.display="";
//fade('pbslide' + frame);
timeouts[3]=setTimeout("pbfade('pbslide"+frame+"');", 50);
            

}
function pbfade(eid)
{
  var element = document.getElementById(eid);
  if(element == null)
    return;
   
  if(element.FadeState == null)
  {
    if(element.style.opacity == null
        || element.style.opacity == ''
        || element.style.opacity == '1')
    {
      element.FadeState = 2;
    }
    else
    {
      element.FadeState = -2;
    }
  }
   
  if(element.FadeState == 1 || element.FadeState == -1)
  {
    element.FadeState = element.FadeState == 1 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade - element.FadeTimeLeft;
  }
  else
  {
    element.FadeState = element.FadeState == 2 ? -1 : 1;
    element.FadeTimeLeft = TimeToFade;
	element.cy=0;
    setTimeout("pbanimateFade(" + new Date().getTime()
        + ",'" + eid + "')", 33);
  } 
}





function pbanimateFade(lastTick, eid)
{ 
  var curTick = new Date().getTime();
  var elapsedTicks = curTick - lastTick;
 
  var element = document.getElementById(eid);
 
  if(element.FadeTimeLeft <= elapsedTicks)
  {
    element.style.opacity = element.FadeState == 1 ? '1' : '0';
    element.style.filter = 'alpha(opacity = '
        + (element.FadeState == 1 ? '100' : '0') + ')';
    element.FadeState = element.FadeState == 1 ? 2 : -2;
    return;
  }
 
  element.FadeTimeLeft -= elapsedTicks;
  var newOpVal = element.FadeTimeLeft/TimeToFade;
  if(element.FadeState == 1){
    newOpVal = 1 - newOpVal;
	element.cy=0;
	}
  else{
  element.cy=element.cy+3;
  }
  element.style.top=element.cy + 'px';

  element.style.opacity = newOpVal;
  element.style.filter =
      'alpha(opacity = ' + (newOpVal*100) + ')';
  setTimeout("pbanimateFade(" + curTick
      + ",'" + eid + "')", 33);
}