/* This file handles everything that is related to the mouse
 * Dependency: none
 */

// GLOBALS
//Array containing ID's of all attached Objects
var AttachedToMouse=new Array();

function attachToMouse(element)
{
  var elem = document.getElementById(element);
  if(elem)
  {
    elem.style.position='absolute';
    AttachedToMouse.push(elem);
  }
  
}

function mouseClear()
{
  AttachedToMouse=new Array();
}

function detachFromMouse(element)
{
  for(elem in AttachedToMouse)
  {
    if(AttachedToMouse[elem] == element)
    {
     var element =  AttachedToMouse.splice(elem,1);
     dropObject(element);
     return element;
    }
  }
}

function dropTop()
{
  var element = AttachedToMouse.pop();
  dropObject(element);
  return element;  
}

function dropObject(element)
{
  var elem = document.getElementById(element);
  if(elem)
  {
    elem.style.zIndex = (parseInt(200-AttachedToMouse.length))   
    elem.style.left = mouseX + 20 + 'px';
    elem.style.top  = mouseY + 'px';
  }
}

//catch cursor possition and update elment if enabled
function getMouseXY(e) {
  var ie = document.all?true:false;
  if (ie) 
  { // grab the x-y pos.s if browser is IE
    mouseX = event.clientX + document.body.scrollLeft;
    mouseY = event.clientY + document.body.scrollTop;
  }
  else 
  { // grab the x-y pos.s if browser is NS
    mouseX = e.pageX;
    mouseY = e.pageY;
  }
  if (mouseX < 0)
    {mouseX = 0;}
  if (mouseY < 0)
    {mouseY = 0;}
  for(element in AttachedToMouse) 
    updateElementPositionToMouse(AttachedToMouse[element],element);
}

//Update given Element to the cursor position
function updateElementPositionToMouse(elem,index)
{
  //var elem = document.getElementById(element)
  if(elem)
  {
    elem.style.zIndex = (parseInt(index)+1000);
    elem.style.left = mouseX + 20 + parseInt(index)*5 + 'px';
    elem.style.top  = mouseY + parseInt(index)*5 + 'px';
  }
}

//initialize mouse event and assign a function to call
function initMouseEvent(MouseFunction)
{
  var ie = document.all?true:false;
  if (!ie) document.captureEvents(Event.MOUSEMOVE)
  document.onmousemove = MouseFunction;
}//global Variables
var toolTip;
var toolTipEnabled=false;

function changeTooltip(tooltip)
{
  toolTip=tooltip;
}

function enableToolTip()
{
  var elem = document.getElementById(toolTip);
  if(elem)
  {
    elem.style.visibility='visible';
    elem.style.display='block';
    attachToMouse(toolTip);
  }
}

function disableToolTip()
{
  var elem = document.getElementById(toolTip);
  if(elem)
  {
    elem.style.visibility='hidden';
    elem.style.display='none';
    detachFromMouse(toolTip);
  }
}initMouseEvent(getMouseXY);
changeTooltip('tooltip');
var width = 6;
var direction = 1;

function scroll()
{
  var elem = document.getElementById('imagescroll');
  if(elem)
  {
  	var left = getPosition(elem);
    if(left-1024<-getObjectWidth(elem) || left>=0)
    {
      direction = direction * -1
    }
    elem.style.left = left + (width*direction) + 'px';
    setTimeout('scroll()',250);
  }
}

function getPosition(element)
{
	var tleft = parseInt(element.style.left);
  if(isNaN(tleft))
    tleft=0;
  return tleft;
}

function getObjectWidth(obj)  {
    var result = 0;
    return parseInt(obj.offsetWidth);
}

setTimeout('scroll()',250);