// DHTMLapi.js custom API for cross-platform
// object positioning by Danny Goodman (http://www.dannyg.com)

// Global variables
var isNav4, isIE4
var insideWindowWidth
var range = ""
var styleObj = ""
if (navigator.appVersion.charAt(0) == "4") {
 if (navigator.appName == "Netscape") {
  isNav4 = true
  insideWindowWidth = window.innerWidth
 } else {
  isIE4 = true
  range = "all."
  styleObj = ".style"
 }
}

// Convert object name string or object reference
// into a valid object reference
function getObject(obj) {
 var theObj
 if (typeof obj == "string") {
  theObj = eval("document." + range + obj + styleObj)
 } else {
  theObj = obj
 }
 return theObj
}

// Positioning an object at a specific pixel coordinate
function shiftTo(obj, x, y) {
 var theObj = getObject(obj)
 if (isNav4) {
  theObj.moveTo(x,y)
 } else {
  theObj.pixelLeft = x
  theObj.pixelTop = y
 }
}

// Moving an object by x and/or y pixels
function shiftBy(obj, deltaX, deltaY) {
 var theObj = getObject(obj)
 if (isNav4) {
  theObj.moveBy(deltaX, deltaY)
 } else {
  theObj.pixelLeft += deltaX
  theObj.pixelTop += deltaY
 }
}

// Setting the z-order of an object
function setZIndex(obj, zOrder) {
 var theObj = getObject(obj)
 theObj.zIndex = zOrder
}

// Setting the background color of an object
function setBGColor(obj, color) {
 var theObj = getObject(obj)
 if (isNav4) {
  theObj.bgColor = color
 } else {
  theObj.backgroundColor = color
 }
}

// Setting the visibility of an object to visible
function show(obj) {
 var theObj = getObject(obj)
 theObj.visibility = "visible"
}

// Setting the visibility of an object to hidden
function hide(obj) {
 var theObj = getObject(obj)
 theObj.visibility = "hidden"
}

// Retrieving the x coordinate of a positionable object
function getObjectLeft(obj)  {
 var theObj = getObject(obj)
 if (isNav4) {
  return theObj.left
 } else {
  return theObj.pixelLeft
 }
}

// Retrieving the y coordinate of a positionable object
function getObjectTop(obj)  {
 var theObj = getObject(obj)
 if (isNav4) {
  return theObj.top
 } else {
  return theObj.pixelTop
 }
}

function showProps(o, objName) {
 var result = ""
 count = 0
 for (var i in o) {
  result += o + "." + i + "=" + o[i] + "\n"
  count++
  if (count == 25) {
   alert(result)
   result = ""
   count = 0
  }
 }
 alert(result)
}