function affichDiv(id){
	cacheDiv(id);
	if(document.getElementById('form'+id)){
		if(document.getElementById('form'+id).style.display=='none'){
			document.getElementById('form'+id).style.display='block';
		}
	}
	if(document.getElementById('video'+id)){
		if(document.getElementById('video'+id).style.display=='none'){
			document.getElementById('video'+id).style.display='block';
		}
	}	
}

function cacheDiv(id){
	for(i=0;i<=15;i++){
		if(document.getElementById('form'+i) && document.getElementById('form'+i).style.display!='none' && id!=i){
			document.getElementById('form'+i).style.display='none';
		}
		if(document.getElementById('video'+i) && document.getElementById('video'+i).style.display!='none' && id!=i){
			document.getElementById('video'+i).style.display='none';
		}
	}
}

function cacheDiv2(id){
	document.getElementById('form'+id).style.display='none';
	document.getElementById('video'+id).style.display='none';
}

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';
}