/************************************************************************************************************
(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 sens = 0;
var previewImage = false;
var previewImageParent = false;
var slideSpeed = 0;
var previewImagePane = false;
var slideEndMarker = false;
var galleryContainer = false;
var imageGalleryCaptions = new Array();

var defilHeight = 245;	///////////////  HAUTEUR DU DEFILEMENT  ////////////////////////
var defilCompt = defilHeight;
var decal = 0;
var topPos = 0;

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 initSlide(e)
{
	if(document.all)e = event;

	slideSpeed = e.clientY + Math.max(document.body.scrollTop,document.documentElement.scrollTop) - getTopPos(this);

	if(this.src.indexOf('fleche_d')>=0){
		slideSpeed = ((slideSpeed)*-1);
	}else{
		slideSpeed = slideSpeed;
	}
	slideSpeed = Math.round(slideSpeed * 1 / userSpeed);
}

function stopSlide()
{
	slideSpeed = 0;
	this.src = this.src.replace('-over','');
}

function slidePreviewPane()
{
	if(slideSpeed!=0){
		if(slideSpeed<0 && (Math.abs(topPos) + (1.5 * defilHeight)) < slideEndMarker.offsetTop){
			topPos -= defilHeight;
		}
		else if(slideSpeed>0 && topPos != 0){
			topPos += defilHeight;
		}

		decal = (Math.abs(topPos) / (defilHeight)) * (-5);

		slideSpeed=0;
		previewImagePane.style.top = (topPos + decal) + 'px';

	}
	setTimeout('slidePreviewPane()',30);
}

function initGalleryScript()
{
	previewImageParent = document.getElementById('defile');
	previewImagePane = document.getElementById('defile').getElementsByTagName('DIV')[0];
	previewImagePane.style.top = '0px';
	galleryContainer  = document.getElementById('galleryContainer');
	var images = previewImagePane.getElementsByTagName('IMG');

	slideEndMarker = document.getElementById('slideEnd');

	document.getElementById('arrow_up_image').onclick = initSlide;

	document.getElementById('arrow_down_image').onclick = initSlide;
	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();

}

function apercu(data, datalien){
	var elem = document.getElementById("agrandi");
	var lien = document.getElementById("lien_agrandi");
	lien.getAttributeNode('href').value = datalien;
	elem.src = data;
}

function addLoadEvent(func){
    var oldonload = window.onload;
    if (typeof window.onload != 'function'){
        window.onload = func;
    }
    else {
        window.onload = function(){
            oldonload();
            func();
        }
    }
}

addLoadEvent(initGalleryScript);