function change_table(reference, btn){
							if (document.getElementById(reference).style.display == "none"){
							document.getElementById(reference).style.display = "table-row";
							document.getElementById(btn).className="btn_semaine";
							}else{
							document.getElementById(reference).style.display = "none";
							document.getElementById(btn).className="btn_semaine_desactive";
							}
						}
function  cacher_class(classe, btn)
      {
				
           var divs = document.getElementsByTagName('div');
           var resultats = new Array();
           for(var i=0; i<divs.length; i++)
                if(divs[i].className == classe){
					resultats.push(divs[i]);
					if (divs[i].style.display == "none"){
						
						divs[i].style.display = "block";
						document.getElementById(btn).className=btn;
						
						
					}else{
						
						divs[i].style.display = "none";
						document.getElementById(btn).className=btn+"_desactive";
						
					}
				}
			
      }
	  
function  modifier_class(id, class_1, class_2)
      {
			
		if (document.getElementById(id).className==class_1){
			document.getElementById(id).className=class_2;
		}else{
			document.getElementById(id).className=class_1;
		}
}
function  modifier_class(id, class_1){
	document.getElementById(id).className=class_1;	
}