// Parts of this library are based on DHTMLapi.js:

// Global variables
var isIE=(document.all)?true:false; 
var isNN=(document.layers)?true:false; 
var coll = "" 
var styleObj = ""
if (isIE) {
	coll = "all."
	styleObj = ".style"
}
var isFlash = false;

function detectFlash() {
	if (
	(navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.indexOf("Mac") == -1 && navigator.appVersion.indexOf("3.1") == -1) ||
	(navigator.plugins && navigator.plugins["Shockwave Flash"]) || 
	(navigator.plugins["Shockwave Flash 2.0"]) 
	) { isFlash = true; }
}

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


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

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