// object positioning
// Global Variables
var isNav, isIE
var coll=""
var styleObj=""
if (parseInt(navigator.appVersion) >= 4)
{
  if (navigator.appName == "Netscape")
  {
    isNav = true
  } else
  {
    isIE = true
    coll = "all."
    styleObj = ".style"
  }
}
// Utility function returns rendered height of object content in pixels
function getObjHeight(obj)
{
  if (isNav)
  {
    return obj.clip.height
  }
  else
  {
    return obj.clientHeight
  }
}
// Utility function returns rendered width of object content in pixels
function getObjWidth(obj)
{
  if (isNav)
  {
    return obj.clip.width
  }
  else
  {
    return obj.clientWidth
  }
}
// Utility function returns the x coordinate of a positionable object
function getObjLeft(obj)
{
  if (isNav)
  {
    return obj.left
  }
  else
  {
    return obj.pixelLeft
  }
}
// Utility function returns the y coordinate of a positionable object
function getObjTop(obj)
{
  if (isNav)
  {
    return obj.top
  }
  else
  {
    return obj.pixelTop
  }
}
// Utility function returns the available content width space in browser window
function getInsideWindowWidth()
{
  if (isNav)
  {
    return window.innerWidth
  }
  else
  {
    return document.body.clientWidth
  }
}
// Utility function returns the available content height space in browser window
function getInsideWindowHeight()
{
  if (isNav)
  {
    return window.innerHeight
  }
  else
  {
    return document.body.clientHeight
  }
}
// Utility function sets the visibility of an object to visible
function show(obj)
{
  obj.visibility = "visible"
}
// Utility function sets the visibility of an object to hidden
function hide(obj)
{
  obj.visibility = "hidden"
}
// Utility function to position an element at a specific x,y location
function shiftTo(obj, x, y)
{
  if (isNav)
  {
    obj.moveTo(x,y)
  }
  else
  {
    obj.pixelLeft = x
    obj.pixelTop = y
  }
}
// Utility function to move an object by x and/or y pixels
function shiftBy(obj, deltaX, deltaY)
{
  if (isNav)
  {
    obj.moveBy(deltaX,deltaY)
  }
  else
  {
    obj.pixelLeft += deltaX
    obj.pixelTop += deltaY
  }
}
// End API code