/***********************************************************************************************
	
	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;
function startSlide(e)
{
	if(document.all)e = event;
	var id = this.id;
	this.getElementsByTagName('IMG')[0].src = '/image/' + this.id + '_over.gif';	
	if(this.id=='arrow_right'){
		slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
		slideSpeed = -1*slideSpeedMultiply;
		slideSpeed = Math.max(-10,slideSpeed);
	}else{			
		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 = '/image/' + 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=50)';	
		activeImage.style.opacity = 0.5;
	}	
	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;
	imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 80;
	maxGalleryXPos = imageGalleryObj.offsetLeft; 
	minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;
	var slideshowImages = imageGalleryObj.getElementsByTagName('IMG');
	for(var no=0;no<slideshowImages.length;no++){
		slideshowImages[no].onmouseover = showImage;
	}
	
	gallerySlide();
}
	
function showPreview(imagePath,imageLargePath,imageCaption){
	var previewImageArea = document.getElementById('previewImageArea');
	previewImageArea.innerHTML = '<a href="'+imageLargePath+'" rel="lightbox[product]" title="'+imageCaption+'"><img id="previewImage" src="'+imagePath+'" alt="click to view larger image" border="0" onload="hideWaitMessageAndShowCaption(\''+imageCaption+'\');"/></a>';

initLightbox();
	if(displayWaitMessage){
		document.getElementById('waitMessage').style.display='inline';
	}
	document.getElementById('largeImageCaption').style.display='none';
}
function hideWaitMessageAndShowCaption(imageCaption)
{
	document.getElementById('waitMessage').style.display='none';	
	document.getElementById('largeImageCaption').innerHTML = imageCaption;
	document.getElementById('largeImageCaption').style.display='block';
}
window.onload = initSlideShow;