var cimage = 1 ;
var timerID = null ;
var totalImages = 21 ;
preloadImage1 = new Image() ;
preloadImage2 = new Image () ;
preloadImage1.src = "images/PC21002w.jpg" ;
preloadImage2.src = "images/PC2100" + totalImages + "w.jpg" ;


function slidenext ()
{
	preloadImage2.src = document.images[12].src ;
	if (cimage >= totalImages) { cimage = 0; }
	document.images[12].src = "images/PC2100" + (cimage += 1) + "w.jpg" ;
	if (cimage >= totalImages) { cimage = 0; }
	preloadImage1.src = "images/PC2100" + (cimage + 1) + "w.jpg" ;
}


function flipnext ()
{
	clearInterval(timerID) ;
	preloadImage2.src = document.images[12].src ;
	if (cimage >= totalImages) { cimage = 0; }
	document.images[12].src = "images/PC2100" + (cimage += 1) + "w.jpg" ;
	if (cimage >= totalImages) { cimage = 0; }
	preloadImage1.src = "images/PC2100" + (cimage + 1) + "w.jpg" ;
}


function flipback ()
{
	clearInterval(timerID) ;
	preloadImage1.src = document.images[12].src ;
	if (cimage <= 1 ) { cimage = totalImages + 1; }
	document.images[12].src = "images/PC2100" + (cimage -= 1) + "w.jpg" ;
	if (cimage <= 1 ) { cimage = totalImages + 1; }
	preloadImage2.src = "images/PC2100" + (cimage - 1) + "w.jpg" ;
}


function startclock()
{	clearInterval(timerID) ;
	timerID = setInterval("slidenext()",5000) ;
}


function stopclock()
{
	clearInterval(timerID) ;
}