/*************************************************************************************************************
flatalbums2006 jaascripts
This is a patchwork of different javascripts related to gallery views.
Each JS may be relased under different licences, so read carefully 
the incipit of each of them before reuse or manipulate it.

This stylesheet is relased in flatalbums2006 for the first time in 03beta version, 
december 2006.

Alfredo Cosco (orazio.nelson[at]gmail[dot]com)

**************************************************************************************************************/
/************************************************************************************************************
(C) www.dhtmlgoodies.com, November 2005
	
This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	
	
Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.
	
Thank you!
	
www.dhtmlgoodies.com
Alf Magne Kalleland
	
************************************************************************************************************/
	var arrowImageHeight = 35;	// Height of arrow image in pixels;
	var displayWaitMessage=true;	// Display a please wait message while images are loading?
	
	var previewImage = false;
	var previewImageParent = false;
	var slideSpeed = 0;
	var previewImagePane = false;
	var slideEndMarker = false;
	var galleryContainer = false;
	var imageGalleryCaptions = new Array();
	function getTopPos(inputObj)
	{		
	
	  var returnValue = inputObj.offsetTop;
	  while((inputObj = inputObj.offsetParent) != null)returnValue += inputObj.offsetTop;
	  return returnValue;
	}
	
	function getLeftPos(inputObj)
	{

	  var returnValue = inputObj.offsetLeft;
	  while((inputObj = inputObj.offsetParent) != null)returnValue += inputObj.offsetLeft;
	  return returnValue;
	}
		
	function showPreview(newSrc,imageIndex)
	{
		if(!previewImage){
			var images = document.getElementById('previewPane').getElementsByTagName('IMG');
			if(images.length>0){
				previewImage = images[0];
			}else{
				previewImage = document.createElement('IMG');
				document.getElementById('previewPane').appendChild(previewImage);	
			}
			
			
		}
		if(displayWaitMessage){
			document.getElementById('waitMessage').style.display='inline';
		}
		document.getElementById('largeImageCaption').style.display='none';
		previewImage.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); };				
		previewImage.src = newSrc;
		
	}
	function hideWaitMessageAndShowCaption(imageIndex)
	{
		document.getElementById('waitMessage').style.display='none';	
		document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex];
		document.getElementById('largeImageCaption').style.display='block';
		
	}	
	function initSlide(e)
	{
		if(document.all)e = event;
		
		if(this.src.indexOf('over')<0)this.src = this.src.replace('.gif','-over.gif');
		
		slideSpeed = e.clientY + Math.max(document.body.scrollTop,document.documentElement.scrollTop) - getTopPos(this);
		if(this.src.indexOf('down')>=0){
			slideSpeed = (slideSpeed)*-1;	
		}else{
			slideSpeed = arrowImageHeight - slideSpeed;
		}
		slideSpeed = Math.round(slideSpeed * 10 / arrowImageHeight);
	}
	
	function stopSlide()
	{		
		slideSpeed = 0;
		this.src = this.src.replace('-over','');
	}
	
	function slidePreviewPane()
	{
		if(slideSpeed!=0){
			var topPos = previewImagePane.style.top.replace(/[^\-0-9]/g,'')/1;	
		
			if(slideSpeed<0 && slideEndMarker.offsetTop<(previewImageParent.offsetHeight - topPos)){
				slideSpeed=0;
			
			}
			topPos = topPos + slideSpeed;
			if(topPos>0)topPos=0;

		 	previewImagePane.style.top = topPos + 'px';
	 	
		}
	 	setTimeout('slidePreviewPane()',30);		
	}
	
	function revealThumbnail()
	{
		this.style.filter = 'alpha(opacity=100)';
		this.style.opacity = 1;
	}
	
	function hideThumbnail()
	{
		this.style.filter = 'alpha(opacity=50)';
		this.style.opacity = 0.5;
	}
	
	function initGalleryScript()
	{
		previewImageParent = document.getElementById('theImages');
		previewImagePane = document.getElementById('theImages').getElementsByTagName('DIV')[0];
		previewImagePane.style.top = '0px';
		galleryContainer  = document.getElementById('galleryContainer');
		var images = previewImagePane.getElementsByTagName('IMG');
		for(var no=0;no<images.length;no++){
			images[no].onmouseover = revealThumbnail;
			images[no].onmouseout = hideThumbnail;
		}	
		slideEndMarker = document.getElementById('slideEnd');
		
		document.getElementById('arrow_up_image').onmousemove = initSlide;
		document.getElementById('arrow_up_image').onmouseout = stopSlide;
		
		document.getElementById('arrow_down_image').onmousemove = initSlide;
		document.getElementById('arrow_down_image').onmouseout = stopSlide;
		var divs = previewImageParent.getElementsByTagName('DIV');
		for(var no=0;no<divs.length;no++){
			if(divs[no].className=='imageCaption')imageGalleryCaptions[imageGalleryCaptions.length] = divs[no].innerHTML;
		}		
		slidePreviewPane();
		
	}
	
window.onload = initGalleryScript;
/*************************************************************************************************************
(C) www.dhtmlgoodies.com, October 2005
	
This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	
	
Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.
	
Thank you!
	
www.dhtmlgoodies.com
Alf Magne Kalleland
	
************************************************************************************************************/	
	// You can modify these three values
	var slideshow2_noFading = false;	// Just normal show/hide without fading ?
	var slideshow2_timeBetweenSlides = 1500;	// Amount of time between each image(1000 = 1 second)
	var slideshow2_fadingSpeed = 10;	// Speed of fading
	
	
	/* Don't change any of these values */
	var slideshow2_galleryHeigh;	// Height of galery	
	var slideshow2_galleryContainer;	// Reference to the gallery div
	var slideshow2_galleryWidth;	// Width of gallery	
	var slideshow2_slideIndex = -1;	// Index of current image shown
	var slideshow2_slideIndexNext = false;	// Index of next image shown
	var slideshow2_imageDivs = new Array();	// Array of image divs(Created dynamically)
	var slideshow2_currentOpacity = 100;	// Initial opacity
	var slideshow2_imagesInGallery = false;	// Number of images in gallery
	
	function getGalleryImageSize(imageIndex)
	{
		if(imageIndex==slideshow2_imagesInGallery){			
			showGallery();
		}else{
			var imgObj = document.getElementById('galleryImage' + imageIndex);
			var imgWidth = imgObj.width;
			var imgHeight = imgObj.height;
			if(imgWidth>50){						
				var tmpDiv = document.createElement('DIV');
				tmpDiv.id = 'galleryDiv' + imageIndex;
				tmpDiv.style.visibility = 'hidden';
				tmpDiv.className='imageInGallery';
				slideshow2_galleryContainer.appendChild(tmpDiv);
				tmpDiv.appendChild(imgObj);
				imgObj.style.left = Math.round((slideshow2_galleryWidth - imgWidth)/2)  + "px";
				imgObj.style.top = Math.round((slideshow2_galleryHeight - imgHeight)/2)  + "px";
				tmpDiv.style.visibility = 'hidden';
				slideshow2_imageDivs.push(tmpDiv);
				imageIndex++;
				getGalleryImageSize(imageIndex);
			}else{
				setTimeout('getGalleryImageSize(' + imageIndex + ')',10);
			}
		}		
	}
	
	function showGallery()
	{
		if(slideshow2_slideIndex==-1)slideshow2_slideIndex=0; else slideshow2_slideIndex++;	// Index of next image to show
		if(slideshow2_slideIndex==slideshow2_imageDivs.length)slideshow2_slideIndex=0;
		slideshow2_slideIndexNext = slideshow2_slideIndex+1;	// Index of the next next image
		if(slideshow2_slideIndexNext==slideshow2_imageDivs.length)slideshow2_slideIndexNext = 0;
		
		slideshow2_currentOpacity=100;	// Reset current opacity

		// Displaying image divs
		slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'visible';
		if(navigator.userAgent.indexOf('Opera')<0){
			slideshow2_imageDivs[slideshow2_slideIndexNext].style.visibility = 'visible';
		}
		
		
		if(document.all){	// IE rules
			slideshow2_imageDivs[slideshow2_slideIndex].style.filter = 'alpha(opacity=100)';
			slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'alpha(opacity=1)';
		}else{
			slideshow2_imageDivs[slideshow2_slideIndex].style.opacity = 0.99;	// Can't use 1 and 0 because of screen flickering in FF
			slideshow2_imageDivs[slideshow2_slideIndexNext].style.opacity = 0.01;
		}		
		

		setTimeout('revealImage()',slideshow2_timeBetweenSlides);		
	}
	
	function revealImage()
	{
		if(slideshow2_noFading){
			slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';
			showGallery();
			return;
		}
		slideshow2_currentOpacity--;
		if(document.all){
			slideshow2_imageDivs[slideshow2_slideIndex].style.filter = 'alpha(opacity='+slideshow2_currentOpacity+')';
			slideshow2_imageDivs[slideshow2_slideIndexNext].style.filter = 'alpha(opacity='+(100-slideshow2_currentOpacity)+')';
		}else{
			slideshow2_imageDivs[slideshow2_slideIndex].style.opacity = Math.max(0.01,slideshow2_currentOpacity/100);	// Can't use 1 and 0 because of screen flickering in FF
			slideshow2_imageDivs[slideshow2_slideIndexNext].style.opacity = Math.min(0.99,(1 - (slideshow2_currentOpacity/100)));
		}
		if(slideshow2_currentOpacity>0){
			setTimeout('revealImage()',slideshow2_fadingSpeed);
		}else{
			slideshow2_imageDivs[slideshow2_slideIndex].style.visibility = 'hidden';			
			showGallery();
		}
	}
	
	function initImageGallery()
	{
		slideshow2_galleryContainer = document.getElementById('imageSlideshowHolder');
		slideshow2_galleryWidth = slideshow2_galleryContainer.clientWidth;
		slideshow2_galleryHeight = slideshow2_galleryContainer.clientHeight;
		galleryImgArray = slideshow2_galleryContainer.getElementsByTagName('IMG');
		for(var no=0;no<galleryImgArray.length;no++){
			galleryImgArray[no].id = 'galleryImage' + no;
		}
		slideshow2_imagesInGallery = galleryImgArray.length;
		getGalleryImageSize(0);		
		
	}