var hauteur, elements, previous;
var current='clear';
var int=0;


function toggle(el) {
	if (el == "clear"){
		if(previous){
			previous.style.visibility = "hidden";	
		}
	}else{
		previous = elements;
		elements=document.getElementById(el);
		if(previous){
			previous.style.visibility = "hidden";	
		}
		elements.style.visibility = "inherit";	
	}
}