var pictlastnumber = 20;
var pictprefix = tprev1 + 'images/hushthumb/thumb_';
var intervalID;
var delay = 3000;
var a = new Array();
var mySequence = startpos;
var delta = 1;

for (var i = 1; i <= (Quantity + 1); i++)
{
	a[i-1] = new Image();
	a[i-1].src = pictprefix + (parseInt(startpos) + parseInt(i)) + ".jpg";
}

function nextpict()
{
	mySequence = parseInt(mySequence + delta);
	if (mySequence > (Quantity + startpos) || mySequence >= pictlastnumber)
	{
		mySequence = startpos;
	}
	document.images["hush"].src = a[mySequence-startpos].src;
}

function animate()
{
	if (intervalID)
	{
		clearInterval(intervalID);
	}
	intervalID = setInterval("nextpict()", delay);
}