var ImageScroller = function(_imageScrollerParentDivID, _imageScrollerChildDivID) {
	_imageScrollerParentDivID = getElem(_imageScrollerParentDivID);
	_imageScrollerChildDivID = getElem(_imageScrollerChildDivID);
	var prImagePaths = new Array();
	var prImageAltText = new Array();
	var prImageClicks = new Array();
	var prImageDescription = new Array();
	var prImageOnclicks = new Array();
	var iNumOfThumbsShown = 1;
	var iNumOfImages;

	var bAutoScroll = 0;
	//0=false, 1=true
	var iAutoScrollDelay = 2000;
	var bAutoScrollDirection = 1;
	//0=back, 1=forward
	var bAutoReverse = 1;
	//0=false, 1=true
	var iScrollType = 1;
	//0=horizontal, 1=vertical
	var bEnableThumbBorder = 0;
	//0=no, 1=yes
	var bEnableCurrentCount = 0;
	//0=no, 1=yes
	var bEnableThumbDescription = 0;
	//0=no, 1=yes
	var bClickOpenType = 0;
	//0=same window, 1=new window
	var iImageScrollAmount = 1;
	//number of images to scroll

	var objCounterDiv = "";
	var objDescriptionDiv = "";
	var iSmoothSlideInterval = 3;
	var iSmoothSlideAmount = 7;
	var moveTimer;

	this.THUMB_HEIGHT = 0;
	this.THUMB_WIDTH = 0;
	this.THUMB_PADDING = 4;

	var CURRENT_THUMB_INDEX = 1;
	var NEW_REVERSE_OFFSET = 0;
	var MAX_REVERSE_OFFSET = 0;
	var NEW_FORWARD_OFFSET = 0;
	var IS_SCROLLING = false;
	//* BEGIN FUNCTIONS *//
	this.setNumOfImageToScroll = function(_NumOfImagesToScroll) {
		iImageScrollAmount = parseInt(_NumOfImagesToScroll);
	};
	this.enableThumbnailDescription = function(_descriptionDivID) {
		bEnableThumbDescription = 1;
		objDescriptionDiv = _descriptionDivID;
	};
	this.setScrollType = function(_iType) {
		if (_iType == 0) {
			iScrollType = 0;
		}
		else {
			iScrollType = 1;
		}
	};
	this.setScrollSpeed = function(_iSpeed) {
		if (_iSpeed > 0 || _iSpeed < 1000) {
			iSmoothSlideInterval = _iSpeed;
		}
		else {
			iSmoothSlideInterval = 7;
		}
	};
	this.setScrollAmount = function(_iAmount) {
		if (_iAmount > 0 || _iAmount < 1000) {
			iSmoothSlideAmount = _iAmount;
		}
		else {
			iSmoothSlideAmount = 7;
		}
	};
	this.setClickOpenType = function(_openType) {
		if (_openType == 0 || _openType == 1) {
			bClickOpenType = _openType;
		}
	};
	this.enableCurrentCount = function(_counterDivID) {
		bEnableCurrentCount = 1;
		objCounterDiv = _counterDivID;
	};
	this.enableThumbBorder = function(_boolean) {
		bEnableThumbBorder = _boolean;
	};
	this.setThumbsShown = function(_newNumOfThumbsShown) {
		iNumOfThumbsShown = parseInt(_newNumOfThumbsShown);
	};
	this.addThumbnail = function(_thumbnailURL, _fullClickURL, _thumbnailAlt, _thumbnailDescription, _onclickFunction) {
		prImagePaths[prImagePaths.length] = _thumbnailURL;
		prImageClicks[prImageClicks.length] = _fullClickURL;
		prImageAltText[prImageAltText.length] = _thumbnailAlt;
		prImageDescription[prImageDescription.length] = _thumbnailDescription;
		prImageOnclicks[prImageOnclicks.length] = _onclickFunction;
	};
	this.setThumbnailHeight = function(_newThumbHeight) {
		this.THUMB_HEIGHT = _newThumbHeight;
	};
	this.getThumbnailHeight = function() {
		return this.THUMB_HEIGHT;
	};
	this.setThumbnailWidth = function(_newThumbWidth) {
		this.THUMB_WIDTH = _newThumbWidth;
	};
	this.getThumbnailWidth = function() {
		return this.THUMB_WIDTH;
	};
	this.setThumbnailPadding = function(_newThumbPadding) {
		this.THUMB_PADDING = _newThumbPadding;
	};
	this.getThumbnailPadding = function() {
		return THUMB_PADDING;
	};
	this.getCurrentThumbIndex = function() {
		return CURRENT_THUMB_INDEX;
	};
	this.getThumbnailCount = function() {
		return iNumOfImages;
	};
	this.renderScroller = function() {
		iNumOfImages = prImagePaths.length;
		if (iNumOfThumbsShown > iNumOfImages) {
			iNumOfThumbsShown = iNumOfImages;
		}
		MAX_REVERSE_OFFSET = 0 - (iNumOfImages - iNumOfThumbsShown) * this.THUMB_WIDTH;
		if (this.THUMB_PADDING > 0) {
			MAX_REVERSE_OFFSET = MAX_REVERSE_OFFSET - (iNumOfImages * this.THUMB_PADDING);
		}
		if (bEnableThumbBorder == 1) {
			MAX_REVERSE_OFFSET = MAX_REVERSE_OFFSET - (iNumOfImages * 4);
		}
		if (iScrollType == 0) {
			_imageScrollerParentDivID.style.width = (this.THUMB_WIDTH * iNumOfThumbsShown) + (iNumOfThumbsShown * (this.THUMB_PADDING * 2)) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerParentDivID.style.width = (parseInt(_imageScrollerParentDivID.style.width) + (iNumOfThumbsShown * 4)) + "px";
			}
			_imageScrollerParentDivID.style.height = this.THUMB_HEIGHT + (this.THUMB_PADDING * 2) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerParentDivID.style.height = (parseInt(_imageScrollerParentDivID.style.height) + 4) + "px";
			}
			_imageScrollerChildDivID.style.width = (this.THUMB_WIDTH * iNumOfImages) + (iNumOfImages * (this.THUMB_PADDING * 2)) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerChildDivID.style.width = (parseInt(_imageScrollerChildDivID.style.width) + (iNumOfImages * 4)) + "px";
			}
		}
		else if (iScrollType == 1) {
			_imageScrollerParentDivID.style.width = (this.THUMB_WIDTH) + ((this.THUMB_PADDING * 2)) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerParentDivID.style.width = (parseInt(_imageScrollerParentDivID.style.width) + (4)) + "px";
			}
			_imageScrollerParentDivID.style.height = (this.THUMB_HEIGHT * iNumOfThumbsShown) + (iNumOfThumbsShown * (this.THUMB_PADDING * 2)) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerParentDivID.style.height = (parseInt(_imageScrollerParentDivID.style.height) + (iNumOfThumbsShown * 4)) + "px";
			}
			_imageScrollerChildDivID.style.width = (this.THUMB_WIDTH) + (this.THUMB_PADDING * 2) + "px";
			if (bEnableThumbBorder == 1) {
				_imageScrollerChildDivID.style.width = (parseInt(_imageScrollerChildDivID.style.width) + 4) + "px";
			}
		}
		//*** [Begin] Image Cacheing code ***//
		var oHref;
		var oImage;
		oHref = document.createElement("a");
		oImage = document.createElement("img");

		for (i = 0; i < iNumOfImages; i++) {
			oHref = document.createElement("a");
			oHref.href = prImageClicks[i];
			oHref.title = prImageAltText[i];
			if(prImageOnclicks[i]!='') oHref.setAttribute("onclick", prImageOnclicks[i]);

			if (bClickOpenType == 1) {
				oHref.target = "_blank";
			}

			oImage = document.createElement("img");
			oImage.src = prImagePaths[i];
			oImage.alt = prImageAltText[i];
			oImage.border = 0;
			
			if(this.THUMB_WIDTH>0) oImage.width = this.THUMB_WIDTH;
			if(this.THUMB_HEIGHT>0) oImage.height = this.THUMB_HEIGHT;
			oImage.style.padding = this.THUMB_PADDING;

			oHref.appendChild(oImage);
			_imageScrollerChildDivID.appendChild(oHref);

		}
		//*** [End]   Image Cacheing code ***//

		if (bEnableCurrentCount == 1) {
			addAnEvent(window, "load", this.updateCurrentCount);
		}
		if (bEnableThumbDescription == 1) {
			addAnEvent(window, "load", this.updateCurrentDescription);
		}
	};
	this.scrollUp = function() {
		_origOffset = parseInt(_imageScrollerChildDivID.style.top);
		_currentOffset = parseInt(_imageScrollerChildDivID.style.top);
		_newOffset = _currentOffset - (this.THUMB_HEIGHT * iImageScrollAmount);
		if (this.THUMB_PADDING > 0) {
			_newOffset = _newOffset - (2 * this.THUMB_PADDING);
		}
		if (bEnableThumbBorder == 1) {
			_newOffset = _newOffset - 4;
		}
		if (IS_SCROLLING == false && _newOffset >= MAX_REVERSE_OFFSET) {
			NEW_FORWARD_OFFSET = _newOffset;
			moveScrollerUp();
		}
	};
	this.scrollDown = function() {
		_origOffset = parseInt(_imageScrollerChildDivID.style.top);
		_currentOffset = parseInt(_imageScrollerChildDivID.style.top);
		_newOffset = _currentOffset + (this.THUMB_HEIGHT * iImageScrollAmount);
		if (this.THUMB_PADDING > 0) {
			_newOffset = _newOffset + (2 * this.THUMB_PADDING);
		}
		if (bEnableThumbBorder == 1) {
			_newOffset = _newOffset + 4;
		}
		if (_newOffset <= 0) {
			if(_currentOffset > (_origOffset - this.THUMB_HEIGHT)) {
				if (IS_SCROLLING == false && _newOffset >= MAX_REVERSE_OFFSET) {
					NEW_REVERSE_OFFSET = _newOffset;
					moveScrollerDown();
				}
			}
		}
	};
	this.scrollTop = function() {
		if (IS_SCROLLING == false) {
			NEW_FORWARD_OFFSET = ( - 1 * (iNumOfImages - iNumOfThumbsShown) * this.THUMB_HEIGHT);
			CURRENT_THUMB_INDEX = iNumOfImages - iNumOfThumbsShown;
			moveScrollerUp();
		}
	};
	this.scrollBottom = function() {
		if (IS_SCROLLING == false) {
			NEW_REVERSE_OFFSET = 0;
			CURRENT_THUMB_INDEX = iNumOfImages - iNumOfThumbsShown;
			moveScrollerDown();
		}
	};
	this.scrollReverse = function() {
		_origOffset = parseInt(_imageScrollerChildDivID.style.left);
		_currentOffset = parseInt(_imageScrollerChildDivID.style.left);
		_newOffset = _currentOffset + (this.THUMB_WIDTH * iImageScrollAmount);
		if (this.THUMB_PADDING > 0) {
			_newOffset = _newOffset + (this.THUMB_PADDING * (2 * iImageScrollAmount));
		}
		if (bEnableThumbBorder == 1) {
			_newOffset = _newOffset + 4;
		}
		if (_newOffset <= 0) {
			if(_currentOffset > (_origOffset - (this.THUMB_WIDTH * iImageScrollAmount))) {
				if (IS_SCROLLING == false) {
					NEW_REVERSE_OFFSET = _newOffset;
					moveScrollerRight();
				}
			}
		}
	};
	this.scrollForward = function() {
		_origOffset = parseInt(_imageScrollerChildDivID.style.left);
		_currentOffset = parseInt(_imageScrollerChildDivID.style.left);
		_newOffset = _currentOffset - (this.THUMB_WIDTH * iImageScrollAmount);
		if (this.THUMB_PADDING > 0) {
			_newOffset = _newOffset - ((2 * iImageScrollAmount) * this.THUMB_PADDING);
		}
		if (bEnableThumbBorder == 1) {
			_newOffset = _newOffset - 4;
		}
		if (IS_SCROLLING == false && _newOffset >= MAX_REVERSE_OFFSET) {
			NEW_FORWARD_OFFSET = _newOffset;
			moveScrollerLeft();
		}
	};
	this.scrollEnd = function() {
		if (IS_SCROLLING == false) {
			NEW_FORWARD_OFFSET = MAX_REVERSE_OFFSET;
			CURRENT_THUMB_INDEX = iNumOfImages - iNumOfThumbsShown;
			moveScrollerLeft();
		}
	};
	this.scrollBegin = function() {
		if (IS_SCROLLING == false) {
			NEW_REVERSE_OFFSET = 0;
			CURRENT_THUMB_INDEX = 2;
			moveScrollerRight();
		}
	};
	this.updateCurrentDescription = function() {
		getElem(objDescriptionDiv).innerHTML = prImageDescription[CURRENT_THUMB_INDEX - 1];
	};
	this.updateCurrentCount = function() {
		getElem(objCounterDiv).innerHTML = CURRENT_THUMB_INDEX + "/" + iNumOfImages;
	};
	function moveScrollerUp() {
		_ElementObj = _imageScrollerChildDivID;
		_currentOffset = parseInt(_ElementObj.style.top);
		if (_currentOffset > NEW_FORWARD_OFFSET && (_currentOffset - iSmoothSlideAmount) >= NEW_FORWARD_OFFSET) {
			_ElementObj.style.top = _currentOffset - iSmoothSlideAmount + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerUp, iSmoothSlideInterval);
		}
		else if (_currentOffset > NEW_FORWARD_OFFSET) {
			_ElementObj.style.top = _currentOffset - 1 + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerUp, iSmoothSlideInterval);
		}
		else {
			IS_SCROLLING = false;
			CURRENT_THUMB_INDEX++;
			window.clearTimeout(moveTimer);
			if (bEnableThumbDescription == 1) {
				getElem(objDescriptionDiv).innerHTML = prImageDescription[CURRENT_THUMB_INDEX - 1];
			}
			if (bEnableCurrentCount == 1) {
				getElem(objCounterDiv).innerHTML = CURRENT_THUMB_INDEX + "/" + iNumOfImages;
			}
		}
	};
	function moveScrollerDown() {
		_ElementObj = _imageScrollerChildDivID;
		_currentOffset = parseInt(_ElementObj.style.top);
		if (_currentOffset < NEW_REVERSE_OFFSET && (_currentOffset + iSmoothSlideAmount) <= NEW_REVERSE_OFFSET) {
			_ElementObj.style.top = _currentOffset + iSmoothSlideAmount + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerDown, iSmoothSlideInterval);
		}
		else if (_currentOffset < NEW_REVERSE_OFFSET) {
			_ElementObj.style.top = _currentOffset + 1 + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerDown, iSmoothSlideInterval);
		}
		else {
			IS_SCROLLING = false;
			CURRENT_THUMB_INDEX--;
			window.clearTimeout(moveTimer);
			if (bEnableThumbDescription == 1) {
				getElem(objDescriptionDiv).innerHTML = prImageDescription[CURRENT_THUMB_INDEX - 1];
			}
			if (bEnableCurrentCount == 1) {
				getElem(objCounterDiv).innerHTML = CURRENT_THUMB_INDEX + "/" + iNumOfImages;
			}
		}
	};
	function moveScrollerRight() {
		_ElementObj = _imageScrollerChildDivID;
		_currentOffset = parseInt(_ElementObj.style.left);
		if (_currentOffset < NEW_REVERSE_OFFSET && (_currentOffset + iSmoothSlideAmount) <= NEW_REVERSE_OFFSET) {
			_ElementObj.style.left = _currentOffset + iSmoothSlideAmount + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerRight, iSmoothSlideInterval);
		}
		else if (_currentOffset < NEW_REVERSE_OFFSET) {
			_ElementObj.style.left = _currentOffset + 1 + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerRight, iSmoothSlideInterval);
		}
		else {
			IS_SCROLLING = false;
			CURRENT_THUMB_INDEX--;
			window.clearTimeout(moveTimer);
			if (bEnableThumbDescription == 1) {
				getElem(objDescriptionDiv).innerHTML = prImageDescription[CURRENT_THUMB_INDEX - 1];
			}
			if (bEnableCurrentCount == 1) {
				getElem(objCounterDiv).innerHTML = CURRENT_THUMB_INDEX + "/" + iNumOfImages;
			}
		}
	};
	function moveScrollerLeft() {
		_ElementObj = _imageScrollerChildDivID;
		_currentOffset = parseInt(_ElementObj.style.left);
		if (_currentOffset > NEW_FORWARD_OFFSET && (_currentOffset - iSmoothSlideAmount) >= NEW_FORWARD_OFFSET) {
			_ElementObj.style.left = _currentOffset - iSmoothSlideAmount + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerLeft, iSmoothSlideInterval);
		}
		else if (_currentOffset > NEW_FORWARD_OFFSET) {
			_ElementObj.style.left = _currentOffset - 1 + "px";
			IS_SCROLLING = true;
			moveTimer = window.setTimeout(moveScrollerLeft, iSmoothSlideInterval);
		}
		else {
			IS_SCROLLING = false;
			CURRENT_THUMB_INDEX++;
			window.clearTimeout(moveTimer);
			if (bEnableThumbDescription == 1) {
				getElem(objDescriptionDiv).innerHTML = prImageDescription[CURRENT_THUMB_INDEX - 1];
			}
			if (bEnableCurrentCount == 1) {
				getElem(objCounterDiv).innerHTML = CURRENT_THUMB_INDEX + "/" + iNumOfImages;
			}
		}
	};
	function addAnEvent(_obj, _eventName, _functionName) {
		if (window.addEventListener) {
			_obj.addEventListener(_eventName, _functionName, false);
		}
		else {
			_obj.attachEvent("on" + _eventName, _functionName);
		}
	};
	function getElem(_elemID) {
		return document.getElementById(_elemID);
	};
};