function getVar(nomVariable) {
  var infos = location.href.substring(location.href.indexOf("?")+1, location.href.length)+"&";
  if (infos.indexOf("#")!=-1) {
    infos = infos.substring(0,infos.indexOf("#"))+"&";
  }
  var page=0;
  nomVariable = nomVariable + "=";
  var taille = nomVariable.length;
  if (infos.indexOf(nomVariable)!=-1) {
    page = infos.substring(infos.indexOf(nomVariable)+taille,infos.length).substring(0,infos.substring(infos.indexOf(nomVariable)+taille,infos.length).indexOf("&"));
  }
  return page;
}

window.onload = function(){
	var page = getVar('page');
  	montre(page);
}

function montre(id) {
  for (var i = 1; i<=11; i++) {
    if(document.getElementById('menu' + String(i)))document.getElementById('menu' + String(i)).style.display='none';
  }
  document.getElementById(id).style.display='block';
}