/***********************************************************************************************

Copyright (c) 2005 - Alf Magne Kalleland post@dhtmlgoodies.com

UPDATE LOG:

March, 10th, 2006 : Added support for a message while large image is loading

Get this and other scripts at www.dhtmlgoodies.com

You can use this script freely as long as this copyright message is kept intact.

***********************************************************************************************/

var displayWaitMessage=true;	// Display a please wait message while images are loading?


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 = '/script/slideshow/images/' + this.id + '_over.gif';
	if(this.id=='arrow_right'){
		slideSpeed = -1;
	}else{
		slideSpeed=1;
	}
	slideSpeed = slideSpeed * 3;
}

function releaseSlide()
{
	var id = this.id;
	this.getElementsByTagName('IMG')[0].src = '/script/slideshow/images/' + 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.className = 'theImages_img';
	}
	this.className = 'theImages_img_hover';
	activeImage = this;
}

function initSlideShow(tailleGallery)
{
	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 - tailleGallery - maxGalleryXPos;

	if (navigator.userAgent.indexOf('MSIE') >= 0) {
		var arrowWidth = 20;
		var el = document.createElement('div');
		el.style.position = 'absolute';
		el.style.left = arrowWidth + 'px';
		el.style.width = (400 - arrowWidth * 2) + 'px';
		el.style.overflow = 'hidden';
		el.style.height = '100px';
		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;
	}

	gallerySlide();
}