var activeImage = false;
var imageGalleryLeftPos = false;
var imageGalleryWidth = false;
var imageGalleryObj = false;
var maxGalleryXPos = false;
var slideSpeed = 0;
var imageGalleryCaptions = new Array();
function startSlide(e)
{
	if(document.all)e = event;
	var id = this.id;
	this.getElementsByTagName('IMG')[0].src = 'img/imagesfilmstrip/' + this.id + '_over.gif';
	if(this.id=='arrow_right'){
		slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
		slideSpeed = -1*slideSpeedMultiply;
		slideSpeed = Math.max(-5,slideSpeed);   /*was 10    changed by Dany*/
	}else{
		slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5);
		slideSpeed = 1*slideSpeedMultiply;
		slideSpeed = Math.min(5,slideSpeed);   /*was 10    changed by Dany*/
		if(slideSpeed<0)slideSpeed=10;
	}
}

function releaseSlide()
{
	var id = this.id;
	this.getElementsByTagName('IMG')[0].src = 'img/imagesfilmstrip/' + this.id + '.gif';
	slideSpeed=0;
}

function gallerySlide()
{
	if(slideSpeed!=0){
		var leftPos = imageGalleryObj.offsetLeft;
		leftPos = leftPos/1 + slideSpeed;
		if(leftPos>maxGalleryXPos){
			leftPos = maxGalleryXPos;
			slideSpeed = 0;

		}
		if(leftPos<minGalleryXPos){
			leftPos = minGalleryXPos;
			slideSpeed=0;
		}

		imageGalleryObj.style.left = leftPos + 'px';
	}
	setTimeout('gallerySlide()',20);

}

function showImage()
{
	if(activeImage){
		activeImage.style.filter = 'alpha(opacity=100)';  /* was 50      changed by Dany */
		activeImage.style.opacity = 1;  /* was 0.5      changed by Dany */
	}
	this.style.filter = 'alpha(opacity=100)';
	this.style.opacity = 1;
	activeImage = this;
}

function initSlideShow()
{
	document.getElementById('arrow_left').onmousemove = startSlide;
	document.getElementById('arrow_left').onmouseout = releaseSlide;
	document.getElementById('arrow_right').onmousemove = startSlide;
	document.getElementById('arrow_right').onmouseout = releaseSlide;




	imageGalleryObj = document.getElementById('theImages');
	imageGalleryLeftPos = imageGalleryObj.offsetLeft;
	var galleryContainer = document.getElementById('galleryContainer');
	imageGalleryWidth = galleryContainer.offsetWidth - 80;
	maxGalleryXPos = imageGalleryObj.offsetLeft;
	minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;

	if (navigator.userAgent.indexOf('MSIE') >= 0) {
		var arrowWidth = document.getElementById('arrow_left').offsetWidth;
		var el = document.createElement('div');
		el.style.position = 'absolute';
		el.style.left = arrowWidth + 'px';
		el.style.width = (galleryContainer.offsetWidth - arrowWidth * 2) + 'px';
		el.style.overflow = 'hidden';
		el.style.height = '100%';

		document.getElementById('galleryContainer').appendChild(el);
		el.appendChild(document.getElementById('theImages'));
	}
	var slideshowImages = imageGalleryObj.getElementsByTagName('IMG');
	for(var no=0;no<slideshowImages.length;no++){
		slideshowImages[no].onmouseover = showImage;
	}

	var divs = imageGalleryObj.getElementsByTagName('DIV');
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='imageCaption')imageGalleryCaptions[imageGalleryCaptions.length] = divs[no].innerHTML;
	}
	gallerySlide();
}

function showPreview(imagePath,imageIndex){
	var subImages = document.getElementById('previewPane').getElementsByTagName('IMG');
	if(subImages.length==0){
		var img = document.createElement('IMG');
		document.getElementById('previewPane').appendChild(img);
	}else img = subImages[0];

	if(displayWaitMessage){
		document.getElementById('waitMessage').style.display='inline';
	}
	document.getElementById('largeImageCaption').style.display='none';
	img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); };
	img.src = imagePath;

}
function hideWaitMessageAndShowCaption(imageIndex)
{
	document.getElementById('waitMessage').style.display='none';
	document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
	document.getElementById('largeImageCaption').style.display='block';

}
window.onload = initSlideShow;