/************************************************************************************************************
	(C) www.dhtmlgoodies.com, June 2006
	
	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
	
	************************************************************************************************************/	
  /*Modifié par Flavien VALENTIN le 06/03/2009
  Les flèches se voient attribuées les valeurs "block" ou "none" pour leurs attributs "display" au lieu des
  attributs "visible" ou "hidden" pour les attibuts "visibility".
  Un calcul automatique est executé pour le nombres de colonnes affichées si la variable columnsOfThumbnails
  est initialisée à "false" lors de sa déclaration.
  */

	
	
	
	var opacitySpeed = 2;	// Speed of opacity - switching between large images - Lower = faster
	var opacitySteps = 10; 	// Also speed of opacity - Higher = faster
	var slideSpeed = 0;	// Speed of thumbnail slide - Lower = faster
	var slideSteps = 6;	// Also speed of thumbnail slide - Higher = faster
	var columnsOfThumbnails = false;	// Hardcoded number of thumbnail columns, use false if you want the script to figure it out dynamically.
	
	/* Don't change anything below here */
	var DHTMLgoodies_largeImage = false;
	var DHTMLgoodies_imageToShow = false;
	var DHTMLgoodies_currentOpacity = 100;
	var DHTMLgoodies_slideWidth = false;
	var DHTMLgoodies_thumbTotalWidth = false;
	var DHTMLgoodies_viewableWidth = false;
	
	var currentUnqiueOpacityId = false;
	var DHTMLgoodies_currentActiveImage = false;
	var DHTMLgoodies_thumbDiv = false;
	var DHTMLgoodies_thumbSlideInProgress = false;
	
	var browserIsOpera = navigator.userAgent.indexOf('Opera')>=0?true:false;
	var leftArrowObj;
	var rightArrowObj;
	var thumbsColIndex = 1;
	var thumbsLeftPos = false;
	
	function initGalleryScript()
	{
		leftArrowObj = document.getElementById('DHTMLgoodies_leftArrow');		
		leftArrowObj.style.display='none';
		rightArrowObj = document.getElementById('DHTMLgoodies_rightArrow');
		leftArrowObj.style.cursor = 'pointer';	
		rightArrowObj.style.cursor = 'pointer';	
		leftArrowObj.onclick = moveThumbnails;
		rightArrowObj.onclick = moveThumbnails;
		/*Modif Flavien VALENTIN 31/03/2009*/
		DHTMLgoodies_largeImage = document.getElementById('DHTMLgoodies_largeImage').getElementsByTagName('img')[2];
		/*Fin modif*/
		var innerDiv = document.getElementById('DHTMLgoodies_thumbs_inner');
		DHTMLgoodies_slideWidth = innerDiv.getElementsByTagName('DIV')[0].offsetWidth;
		DHTMLgoodies_thumbDiv = document.getElementById('DHTMLgoodies_thumbs_inner');
		DHTMLgoodies_thumbDiv.style.left = '0px';
		
		var subDivs = DHTMLgoodies_thumbDiv.getElementsByTagName('DIV');
		
		/*Modif Flavien VALENTIN 06/03/2009
		Calcul automatique du nombre de colonnes si columnsOfThumbnails a été réglé sur "false" */
		if (columnsOfThumbnails == false){
      columnsOfThumbnails = subDivs.length / 5;
    }
    /*Fin modif*/
    
    /*Modif Flavien VALENTIN 17/03/2009
    S'il n'y a pas assez de photos pour faire défiler la galerie la flèche droite n'apparait pas*/
    if (columnsOfThumbnails <= 3)
    {
      rightArrowObj.style.display='none';
    }
    /*Fin modif*/
    
		DHTMLgoodies_thumbTotalWidth = 0;
		var tmpLeft = 0;
		for(var no=0;no<subDivs.length;no++){
			if(subDivs[no].className=='strip_of_thumbnails'){
				DHTMLgoodies_thumbTotalWidth = DHTMLgoodies_thumbTotalWidth + DHTMLgoodies_slideWidth;
				subDivs[no].style.left = tmpLeft + 'px';
				subDivs[no].style.top = '0px';
				tmpLeft = tmpLeft + subDivs[no].offsetWidth;
			}
		}

		DHTMLgoodies_viewableWidth = document.getElementById('DHTMLgoodies_thumbs').offsetWidth;
		
		
		DHTMLgoodies_currentActiveImage = DHTMLgoodies_thumbDiv.getElementsByTagName('A')[0].getElementsByTagName('img')[0];
		DHTMLgoodies_currentActiveImage.className='activeImage';
	}
	
	function moveThumbnails()
	{
		if(DHTMLgoodies_thumbSlideInProgress)return;
		DHTMLgoodies_thumbSlideInProgress = true;
		if(this.id=='DHTMLgoodies_leftArrow'){
			thumbsColIndex--;
			rightArrowObj.style.display='block';
			if(DHTMLgoodies_thumbDiv.style.left.replace('px','')/1>=0){
				leftArrowObj.style.display='none';
				DHTMLgoodies_thumbSlideInProgress = false;
				return;
			}
			
			slideThumbs(slideSteps,0);
			
		}else{
			thumbsColIndex++;
			leftArrowObj.style.display='block';
			var left = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;	
			var showArrow = true;
			if(DHTMLgoodies_thumbTotalWidth + left - DHTMLgoodies_slideWidth <= DHTMLgoodies_viewableWidth)showArrow = false;
			if(columnsOfThumbnails)showArrow = true;
				
			if(!showArrow)	
			{
				rightArrowObj.style.display='none';
				DHTMLgoodies_thumbSlideInProgress = false;
				return;
			}	
			
			slideThumbs((slideSteps*-1),0);
		}	
		
	}
	
	function slideThumbs(speed,currentPos)
	{
		var leftPos;
		if(thumbsLeftPos){
			leftPos= thumbsLeftPos;
		}else{
			var leftPos = DHTMLgoodies_thumbDiv.style.left.replace('px','')/1;
			thumbsLeftPos = leftPos;
		}
		currentPos = currentPos + Math.abs(speed);		
		var tmpLeftPos = leftPos;
		leftPos = leftPos + speed;
		thumbsLeftPos = leftPos;
		DHTMLgoodies_thumbDiv.style.left = leftPos + 'px';
		if(currentPos<DHTMLgoodies_slideWidth)setTimeout('slideThumbs(' + speed + ',' + currentPos + ')',slideSpeed);else{
			if(tmpLeftPos>=0 || (columnsOfThumbnails && thumbsColIndex==1)){
				document.getElementById('DHTMLgoodies_leftArrow').style.display='none';
			}	
			var left = tmpLeftPos;		
			var showArrow = true;
			if(DHTMLgoodies_thumbTotalWidth + left - DHTMLgoodies_slideWidth <= DHTMLgoodies_viewableWidth)showArrow=false;
			if(columnsOfThumbnails){
				if((thumbsColIndex+1)<columnsOfThumbnails)showArrow=true; else showArrow = false;				
			}			
			if(!showArrow){
				document.getElementById('DHTMLgoodies_rightArrow').style.display='none';
			}					
			DHTMLgoodies_thumbSlideInProgress = false;
		}
	
	}
	
	function showPreview(imagePath,inputObj)
	{		
		if(DHTMLgoodies_currentActiveImage){
			if(DHTMLgoodies_currentActiveImage==inputObj.getElementsByTagName('img')[0])return;
			DHTMLgoodies_currentActiveImage.className='';
		}
		DHTMLgoodies_currentActiveImage = inputObj.getElementsByTagName('img')[0];
		DHTMLgoodies_currentActiveImage.className='activeImage';
		
		DHTMLgoodies_imageToShow = imagePath;
		var tmpImage = new Image();
		tmpImage.src = imagePath;
		currentUnqiueOpacityId = Math.random();
		moveOpacity(opacitySteps*-1,currentUnqiueOpacityId);
	}
	
	function setOpacity()
	{
		if(document.all)
		{
			DHTMLgoodies_largeImage.style.filter = 'alpha(opacity=' + DHTMLgoodies_currentOpacity + ')';
		}else{
			DHTMLgoodies_largeImage.style.opacity = DHTMLgoodies_currentOpacity/100;
		}		
	}
	function moveOpacity(speed,uniqueId)
	{
		
		if(browserIsOpera){
			DHTMLgoodies_largeImage.src = DHTMLgoodies_imageToShow;
			return;
		}
		
		DHTMLgoodies_currentOpacity = DHTMLgoodies_currentOpacity + speed;
		if(DHTMLgoodies_currentOpacity<=5 && speed<0){
		
			var tmpParent = DHTMLgoodies_largeImage.parentNode; 
			DHTMLgoodies_largeImage.parentNode.removeChild(DHTMLgoodies_largeImage);
			DHTMLgoodies_largeImage = document.createElement('img');
			tmpParent.appendChild(DHTMLgoodies_largeImage);
			setOpacity();
			DHTMLgoodies_largeImage.src = DHTMLgoodies_imageToShow;
			/*Modif Flavien VALENTIN 31/03/2009*/
			DHTMLgoodies_largeImage.id = 'initial';
			DHTMLgoodies_largeImage.setAttribute('onclick','visibilite(\'originale\',\'visibility\');exportUrl(this.src);');
			DHTMLgoodies_largeImage.onclick = function() {visibilite('originale','visibility');exportUrl(this.src);};
			var tmp = DHTMLgoodies_imageToShow.split('/');
			separe(tmp[tmp.length-1],'initial');
			/*Fin modif*/
		
			speed=opacitySteps;
		}
		if(DHTMLgoodies_currentOpacity>=99 && speed>0)DHTMLgoodies_currentOpacity=99;		
		setOpacity();	
		if(DHTMLgoodies_currentOpacity>=99 && speed>0)return;	
		if(uniqueId==currentUnqiueOpacityId)setTimeout('moveOpacity(' + speed + ',' + uniqueId + ')',opacitySpeed);		
	}
	
	
	
	/*Modif Flavien VALENTIN 31/03/2009*/
  function showText(url){
    new Ajax.Request( url,{asynchronous: "true" ,method: "post",onSuccess: afficheTxt.bind(this)} );
  }
  
  function afficheTxt(request) 
  {		
		Effect.Appear($('txt'), {delay:0.5});
		$('txt').innerHTML = request.responseText;
		var allscript = $('txt').getElementsByTagName('script');
		for(var i=0;i <  allscript.length;i++)
		{
			eval(allscript[i].text);
		}
  }
  
  function separe(chaine,id){
    var chaine2 = chaine.split('-');
    var chaine3 = '';
    for (var i = 0;i<chaine2.length;i++){
      chaine3 += chaine2[i]+' ';
    }
    var chaine4 = chaine3.split('.');
    chaine5 = chaine4[0];
    $(id).alt = chaine5;
  }
  
  function exportUrl(url){
    $('imgOriginale').src = url;
  }
  /*fin modif*/