var menu_courant = '';
var compteur;
var pageOK = false;
var queue = Effect.Queues.get('menu');

function rollon(menu) {
  if (pageOK) {
    lockmenu();
    if (menu != menu_courant){
    	document.getElementById('menu'+menu).style.height = '235px';
    	new Effect.BlindDown('menu'+menu, {duration:0.2, queue: {scope: 'menu', position: 'end'}, beforeStart: effaceroll()});        	
    	menu_courant = menu;
    }
  }
}
function effaceroll() {
  if (pageOK) {
  	clearQueue();
    for (var i=1;i<7;i++){
    		elt = document.getElementById('menu'+i);
    		if (elt.style.display!='none'){
    			new Effect.BlindUp(elt, {duration:0.2});
    			//elt.style.display = 'none';
    		}    		
    }
    menu_courant = '';
  }
}

function clearQueue(){
queue.each(function(e) { e.cancel() });
}


function rolloff() {
  compteur = setTimeout("effaceroll()",700);
}

function lockmenu() {
  clearTimeout(compteur);
}