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

	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)
	{
		//alert('Test');
		//alert(e);
		if(document.all)e = event;
		var id = this.id;
		//alert("this.id : " + this.id);
		this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '.gif';
		if(this.id=='arrow_right'){
			//alert("this.id 2 : " + this.id);
			slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}else{
			//alert("Else : " + this.id);
			slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)slideSpeed=10;
		}
	}

	function releaseSlide()
	{
		var id = this.id;
		this.getElementsByTagName('IMG')[0].src = '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.style.filter = 'alpha(opacity=100)';
			activeImage.style.opacity = 0.5;
		}
		this.style.filter = 'alpha(opacity=100)';
		this.style.opacity = 1;
		activeImage = this;
	}
*/
	function initSlideShow()
	{
		//alert('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('thumbs');
		imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		var chanel = document.getElementById('chanel');
		imageGalleryWidth = chanel.offsetWidth - 80;
		maxGalleryXPos = imageGalleryObj.offsetLeft;
		minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd_horizontal').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 = (chanel.offsetWidth - arrowWidth * 2) + 'px';
			el.style.overflow = 'hidden';
			el.style.height = '100%';

			document.getElementById('chanel').appendChild(el);
			el.appendChild(document.getElementById('thumbs'));
		}
		/*
		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 hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
		document.getElementById('largeImageCaption').style.display='block';

	}
*/
	//window.onload = initSlideShow;