function montre_div(idDiv,tab){
	var div = document.getElementsByTagName("div"); 
	var efface=1;
	for(var i=0;i<div.length;i++){
		if(!tab){
			div[i].style.display='none';
			div[i].style.visibility='hidden';	
		}else{
			efface=1;
			for(var j=0;j<tab.length;j++){
				if(tab[j]==div[i].id){
					efface=0;
				}
			}
			if(efface==1){
				div[i].style.display='none';
				div[i].style.visibility='hidden';
			}
		}
	}
	document.getElementById(idDiv).style.display='block';
	document.getElementById(idDiv).style.visibility='visible';	
}
	
function cache_div(tab){
	var div = document.getElementsByTagName("div"); 
	var efface=1;
	for(var i=0;i<div.length;i++){
		if(!tab){
			div[i].style.display='none';
			div[i].style.visibility='hidden';
		}else{
			efface=1;
			for(var j=0;j<tab.length;j++){
				if(tab[j]==div[i].id){
					efface=0;
				}
			}
			if(efface==1){
				div[i].style.display='none';
				div[i].style.visibility='hidden';
			}	
		}
	}
}

function affiche_contact(div,destinataire) {
	new Ajax.Updater(div, '/ajax/affiche_contact.php?destinataire='+destinataire, {method:'get', onComplete:insertDiv()});
}


function montreSimulateur(div) {
	new Ajax.Updater(div, '/ajax/affiche_simulateur.php', {method:'get', onComplete:insertDiv()});
}

function insertDiv() {
    document.getElementById('Layer_simul').style.visibility='visible';
}

function cacheDiv() {
    document.getElementById('Layer_simul').style.visibility='hidden';
}

function getScrollY() {
  var scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
    scrOfY = window.pageYOffset;
  } else if( document.body && document.body.scrollTop) {
    scrOfY = document.body.scrollTop;
  } else if( document.documentElement && document.documentElement.scrollTop) {
    scrOfY = document.documentElement.scrollTop;
  }
  return scrOfY;
}

function scrolling()
{
 var scrollY=getScrollY();
 document.getElementById("conteneur_photo").style.top=parseInt(scrollY)+'px';
}