// -- Configuration -------
//var fireFoxHeightAdd = 161 //  Firefox drukcije gleda sirinu pa ce ova postavka ispraviti jump nakon prvog kruga skripte 
var clipTop = 0;
var clipWidth = 181;

var clipBottom = 350;
//var clipBottom = 139;

var lyrheight = 580;
// ------------------------

var topper = 0;

var startClipTop = clipTop;
var startClipBottom = clipBottom;
var startTopper = topper;

var time, amount, theTime, theHeight, DHTML;

function init(layername)
{
	DHTML = (document.getElementById || document.all || document.layers)
	if (!DHTML) return;
	var x = new getObj(layername);
	if (document.layers)
	{
		x.style.clip.top = clipTop;
		x.style.clip.left = 0;
		x.style.clip.right = clipWidth;
		x.style.clip.bottom = clipBottom;
	}
	else if (document.getElementById || document.all)
	{
		x.style.clip = 'rect(' + clipTop + ' ' + clipWidth + ' ' + clipBottom + ' 0)'
	}    
}

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;
	clipTop += amount;
	clipBottom += amount;
	topper -= amount;
	var height = clipBottom - clipTop;
	if (clipTop <= 0 || clipBottom > (lyrheight / 2 + (clipBottom - clipTop) + 10))
	{
		clipTop = startClipTop;
		clipBottom = startClipBottom;
		topper = startTopper;
	}
	if (document.getElementById || document.all)
	{
		clipstring = 'rect(' + clipTop + ' ' + clipWidth + ' ' + clipBottom + ' 0)'
		thelayer.style.clip = clipstring;
		thelayer.style.top = topper;
	}
	else if (document.layers)
	{
		thelayer.style.clip.top = clipTop;
		thelayer.style.clip.bottom = clipBottom;
		thelayer.style.top = topper;
	}
	time = setTimeout('realscroll()',theTime);
}

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

function vis(layername, val)
{
	if (!DHTML) return;
	var f = new getObj(layername);
	f.style.visibility = val;
}

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];
  }
}