var clipTop = 0;
var clipLeft = 0;
var clipRight = 259;
var clipBottom = 54;
var lefter = 0; /*used to be 130*/
var lyrwidth = 0;
var time,amount,theTime,theHeight,DHTML;

function getObj(name)
{
  if (document.getElementById)
  {
  	this.obj = document.getElementById(name);
	this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
	this.obj = document.all[name];
	this.style = document.all[name].style;
  }
  else if (document.layers)
  {
   	this.obj = document.layers[name];
   	this.style = document.layers[name];
  }
}

function init()
{
	DHTML = (document.getElementById || document.all || document.layers)
	if (!DHTML) return;
	var x = new getObj('thumbs');
	if (document.layers)
	{
		lyrwidth = x.style.clip.right;
		lyrwidth += 20;
		x.style.clip.top = clipTop;
		x.style.clip.left = clipLeft;
		x.style.clip.right = clipRight;
		x.style.clip.bottom = clipBottom;
	}
	else if (document.getElementById || document.all)
	{
		lyrwidth = x.obj.offsetWidth;
		x.style.clip = 'rect('+clipTop+'px,'+clipRight+'px,'+clipBottom+'px,'+clipLeft+'px)';
	}
}

function scrollayer(layername,amt,tim)
{
	if (!DHTML) return;
	thelayer = new getObj(layername);
	if (!thelayer) return;
	amount = amt;
	theTime = tim;
	realscroll();
}

function realscroll()
{
	if (!DHTML) return;
	clipRight += amount;
	clipLeft += amount;
	lefter -= amount;
	if (clipLeft < 0 || clipRight > lyrwidth)
	{
		clipLeft -= amount;
		clipRight -= amount;
		lefter += amount;
		return;
	}
	if (document.getElementById || document.all)
	{
		clipstring = 'rect('+clipTop+'px,'+clipRight+'px,'+clipBottom+'px,'+clipLeft+'px)';
		thelayer.style.clip = clipstring;
		thelayer.style.left = lefter + 'px';
	}
	else if (document.layers)
	{
		thelayer.style.clip.left = clipLeft;
		thelayer.style.clip.right = clipRighter;
		thelayer.style.left = lefter;
	}
	time = setTimeout('realscroll()',theTime);
}

function stopScroll()
{
	if (time) clearTimeout(time);
}