var VR = new Object();

VR.Init = function()
{
  var obj = document.getElementById( "ptviewer" );
  
  obj.innerHTML = obj.innerHTML;
}

VR.init = function()
{
  if( this._viewer == null )
    this._viewer = document.getElementById( "ptviewer" );
}

VR.ZoomIn = function()
{
  this.init();
   
  this._viewer.startAutoPan(0,0,0.97);
  
  return false;
}

VR.ZoomOut = function()
{
  this.init();

  this._viewer.startAutoPan(0,0,1.03);
  
  return false;
}

VR.MoveLeft = function()
{
  this.init();
  this._viewer.startAutoPan(-0.3,0,1);
  return false;
}

VR.MoveRight = function()
{
  this.init();
  this._viewer.startAutoPan(0.3,0,1);
  return false;
}

VR.MoveUp = function()
{
  this.init();
  this._viewer.startAutoPan(0,0.3,1);
  return false;
}

VR.MoveDown = function()
{
  this.init();
  this._viewer.startAutoPan(0,-0.3,1);
  return false;
}
/*
window.onload = function()
{
  VR.Init();
}
*/