function lib_bwcheck()
{
  this.ver=navigator.appVersion
  this.agent=navigator.userAgent
  this.dom=document.getElementById?1:0
  this.opera5=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0
  this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
  this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
  this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
  this.ie=this.ie4||this.ie5||this.ie6
  this.mac=this.agent.indexOf("Mac")>-1
  this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
  this.ns4=(document.layers && !this.dom)?1:0;
  this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5)
  return this
}

var bw = new lib_bwcheck();

//If you want it to move faster you can set this lower:
var speed = 160;

//Sets variables to keep track of what's happening
var loop, timer;

//Object constructor
function makeObj(obj,nest)
{
  nest = (!nest) ? "" : 'document.' + nest + '.';
  this.el = bw.dom ? document.getElementById(obj) : bw.ie4 ? document.all[obj] : bw.ns4 ? eval(nest+'document.'+obj) : 0;
  this.css = bw.dom ? document.getElementById(obj).style : bw.ie4 ? document.all[obj].style : bw.ns4 ? eval(nest+'document.'+obj) : 0;
  this.scrollHeight = bw.ns4 ? this.css.document.height : this.el.offsetHeight;
  this.scrollWidth = bw.ns4 ? this.css.document.width : this.el.offsetWidth;
  this.clipHeight = bw.ns4 ? this.css.clip.height : this.el.offsetHeight;
  this.clipWidth = bw.ns4 ? this.css.clip.width : this.el.offsetWidth;
  this.up = goUp;
  this.down = goDown;
  this.left = goLeft;
  this.right = goRight;
  this.moveIt = moveIt;
  this.x;
  this.y;
  this.obj = obj + "Object";
  eval(this.obj + "=this");
  return this;
}

function moveIt(x,y)
{
  this.x = x;
  this.y = y;
  this.css.left = this.x;
  this.css.top = this.y;
  document.cookie="portfo_scroll=" + escape(oScroll.x);
}

//Makes the object go down
function goDown(move)
{
  if (this.y>-this.scrollHeight+oCont.clipHeight)
  {
    this.moveIt(0,this.y-move)
      if (loop) setTimeout(this.obj+".down("+move+")",speed)
  }
}

//Makes the object go right
function goRight(move)
{
	if (this.x>-this.scrollWidth+oCont.clipWidth)
	{
		this.moveIt(this.x-move,0)
		if (loop) setTimeout(this.obj+".right("+move+")",speed)
	}
}

//Makes the object go up
function goUp(move)
{
  if(this.y < 0){
    this.moveIt(0,this.y-move)
    if (loop) setTimeout(this.obj+".up("+move+")",speed)
  }
}

//Makes the object go left
function goLeft(move)
{
	if (this.x < 0) {
		this.moveIt(this.x-move,0)
		if (loop) setTimeout(this.obj+".left("+move+")",speed)
	}
}

//Calls the scrolling functions. Also checks whether the page is loaded or not.
var DEFAULT_SCROLL_SPEED = 10;

function scroll(isScrollUp, speed)
{
  if (loaded) {
    loop = true;
    if (!speed)
      speed = DEFAULT_SCROLL_SPEED;
    if (isScrollUp)
      oScroll.up(0 - speed)
    else
      oScroll.down(speed)
  }
}

function scrollh(isScrollLeft, speed)
{
  if (loaded) {
    loop = true;
    if (!speed)
      speed = DEFAULT_SCROLL_SPEED;
    if (isScrollLeft)
      oScroll.left(0 - speed)
    else
      oScroll.right(speed)
  }
}

//Stops the scrolling (called on mouseout)
function noScroll()
{
  loop = false
  if (timer) clearTimeout(timer)
}

//Makes the object
var loaded;
function scrollInit()
{
//  if (document.layers.indexOf('divCont')!=0) {
  var allcookies = document.cookie;
  var pos = allcookies.indexOf("portfo_scroll=");
  var value;
  if (pos != -1) {
    var start = pos + 14;
    var end = allcookies.indexOf(";", start);
    if (end == -1) end = allcookies.length;
    value = unescape(allcookies.substring(start, end));
    // value = unescape(value);
  }
  else {
    value = 0;
  }
  oCont = new makeObj('divCont');
  oScroll = new makeObj('divText','divCont');
  oScroll.moveIt(value,0);
  oCont.css.visibility = 'visible';
//  }
  loaded = true;
}

//Call the init on page load
onload = scrollInit;