/**
 * Meet'n'Go
 * fichier : voyages.js
 * 
 * Fonction dynamique pour le slideshow des voyages
 * 
 * @author	Andy (Julien LENOIR)
 * @package	Meet'N'Go
 */

var displayWaitMessage=true;
		
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 = 'images/fleche_nav_left.gif';	
	if(this.id=='MYPGALLERY_arrow_right'){
		slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft));
		slideSpeed = -1*slideSpeedMultiply;
		slideSpeed = Math.max(-10,slideSpeed);
		slideSpeed= -10;
	}else{			
		slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft));
		slideSpeed = 1*slideSpeedMultiply;
		slideSpeed = Math.min(10,slideSpeed);
		if(slideSpeed<0)slideSpeed=10;
		slideSpeed= 10;
	}
}

function releaseSlide()
{
	var id = this.id;
	//this.getElementsByTagName('IMG')[0].src = 'images/fleche_nav_left.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 = 1;
	}	
	this.style.filter = 'alpha(opacity=100)';
	this.style.opacity = 1;	
	activeImage = this;	
}

function MYPGALLERY_initSlideShow()
{
	// quit if this function has already been called
	if (arguments.callee.done) return;

	// flag this function so we don't do the same thing twice
	arguments.callee.done = true;

	if (document.getElementById('MYPGALLERY_voyageList')) {
		document.getElementById('MYPGALLERY_arrow_left').onmousemove = startSlide;
		document.getElementById('MYPGALLERY_arrow_left').onmouseout = releaseSlide;
		document.getElementById('MYPGALLERY_arrow_right').onmousemove = startSlide;
		document.getElementById('MYPGALLERY_arrow_right').onmouseout = releaseSlide;
		
		document.getElementById('MYPGALLERY_voyageList').style.display = "block";
			
		imageGalleryObj = document.getElementById('MYPGALLERY_voyageList');
		imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		imageGalleryWidth = document.getElementById('MYPGALLERY_voyagesContainer').offsetWidth;
		maxGalleryXPos = imageGalleryObj.offsetLeft; 
		minGalleryXPos = imageGalleryWidth - document.getElementById('MYPGALLERY_slideEnd').offsetLeft - 32;
		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();
	}
}