// Capture mouse coordinates
function hMsMv(e) {
	
  if (isVertical)
  	  m_x = (ns) ? e.pageY : event.clientY + document.body.scrollTop;
  else	  
	  m_x = (ns) ? e.pageX : event.clientX + document.body.scrollLeft;
  return false;
}

function hMsUp(e) {
  if ((ns && e.which == 1) || ie) 
  {
	if (st) clearTimeout(st);
	if (dragt) { dragt=0; dist_t=0; }
  }
  return true;
}

function moveThumb() {
  if (thumbPos < thumbStart)
  {
	thumbPos = thumbStart;
  }
  else 
	if (thumbPos > thumbStart + scrollInLength - scrollLength)
	{
      thumbPos = thumbStart + scrollInLength - scrollLength;
	}
  eleMove('thumb', thumbPos);
  scrollPos = (thumbPos - thumbStart) / scrollTicks;
  hScrollTo(scrollPos*(eleWidth(mainLayer)/scrollInLength), mainLayer);
}

function dragScroll()
{
  if (dragt > 0) 
  {
    if (dist_t == 0)
   		  dist_t = m_x - thumbPos;
    thumbPos = m_x - dist_t;
    moveThumb();
  }
  st = setTimeout("dragScroll()", 30);
  return false;
}
/*
function clingScroll()
{
  thumbPos = m_x;
  moveThumb();
}
*/
function hScroll(Nsign)
{
  if (NOSCROLL) return;
  newPos = scrollPos + (Nsign * rate);

  testVal = (Nsign > 0) ? "newPos + mainLength <= eleWidth(mainLayer)" : "newPos > 0";
  if (eval(testVal))
    scrollPos = newPos;
  else
    (Nsign > 0) ? scrollPos = eleWidth(mainLayer) - mainLength : scrollPos = 0;

  thumbPos = thumbStart + scrollPos*(scrollInLength/eleWidth(mainLayer));
  eleMove('thumb', thumbPos);
  hScrollTo(scrollPos, mainLayer);
} 

function hScrollTo(fT, mainLayer)
{ 
  if (isVertical) eleClip(mainLayer, 0, fT, mainWidth, fT+mainLength);
  else eleClip(mainLayer, fT, 0, fT+mainLength, mainWidth);
  eleMove(mainLayer, -fT + leftPos);
}

function eleWidth(eleId)
{
   if (isVertical)	
   {
	   if (ie4)        return eval('document.all.' + eleId + '.offsetHeight');
	   else if (ns4)   return eval('document.' + eleId + '.document.height');
   	   else if (docom) return document.getElementById(eleId).offsetHeight;
   }
   else
   {
   	   if (ie4)        return eval('document.all.' + eleId + '.offsetWidth');
       else if (ns4)   return eval('document.' + eleId + '.document.width');
       else if (docom) return document.getElementById(eleId).offsetWidth;
	} 
}

function eleClip(eleId, x0, y0, x1, y1)
{

//   alert(eleId+':'+x0+','+y0+','+x1+','+y1);	
	
   if (ns4) {
     var ele = eval('document.' + eleId);
     ele.clip.top = y0;
     ele.clip.right = x1;
     ele.clip.bottom = y1;
     ele.clip.left = x0;
   } else if (ie4) {
     clipStr = 'rect(' + y0 + ',' + x1 + ',' + y1 + ',' + x0 + ')';
     if (ie4) 
	 {
//		alert('document.all.' + eleId + '.style.clip = "' + clipStr + '"');
		ele = eval('document.all.' + eleId + '.style.clip = "' + clipStr + '"');
	 }	 
   } else if (docom) document.getElementById(eleId).style.clip = 'rect(' + y0 + ',' + x1 + ',' + y1 + ',' + x0 + ')';
}

function eleMove(eleId, offset)
{
  dir = isVertical ? 'top' : 'left';	
  if (ns4) eval('document.' + eleId + '.'+dir+' = ' + offset);
  else if (ie4) eval('document.all.' + eleId + '.style.'+dir+' = ' + offset);
  else if (docom) eval('document.getElementById(eleId).style.'+dir+' = offset');
}

function elePos(eleId, x, y)
{
  if (ns4) eval('document.' + eleId + '.left = ' + x);
  else if (ie4) eval('document.all.' + eleId + '.style.left = ' + x);
  else if (docom) document.getElementById(eleId).style.left = x;
  
  if (ns4) eval('document.' + eleId + '.top = ' + y);
  else if (ie4) eval('document.all.' + eleId + '.style.top = ' + y);
  else if (docom) document.getElementById(eleId).style.top = y;
}

function reDraw() {
  if (ns4 && (winW!=window.innerWidth || winH!=window.innerHeight))
    history.go(0);
}

window.onload = setup;
window.offscreenBuffering = true;
window.onresize = reDraw;

if (dhtmlBrowser) {
  document.onmouseup = hMsUp;
  document.onmousemove = hMsMv;
  if (ns4) document.captureEvents(Event.MOUSEMOVE | Event.MOUSEUP);
}