/* Menu */
function aff_cach(idbloc) { 
	var element = document.getElementById(idbloc); 
	element.style.display = (element.style.display == "block") ? "none" : "block"; 
}

function aff_cach2(className) {
	var allElements = document.getElementsByTagName(div);

	for (var i = 0; i< allElements.length; i++) {
		if (hasClass(allElements[i], className)) {
			document.allElements[i].style.display = (document.allElements[i].style.display == "block") ? "none" : "block";
		}
	}
}

/* Afficher-cacher les catégories */
function getElementsByClass(searchClass, node, tag)
{
	var classElements = new Array();
	if(node == null) node = document;
	if(tag == null) tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
  
	for(i = 0, j = 0; i < elsLen; i++)
	{
		if(pattern.test(els[i].className) )
		{ 
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function affByClass(searchClass, option, tag){
	var node = document;
	var elm = getElementsByClass(searchClass, node, tag);
		
	for(var i = 0; i < elm.length; i++)
	{
		elm[i].style.display = "block";
	}
}

function hiddenByClass(searchClass, option, tag){
	var node = document;
	var elm = getElementsByClass(searchClass, node, tag);
		
	for(var i = 0; i < elm.length; i++)
	{
		elm[i].style.display = "none";
	}
}