var store_exec = new Array();
store_exec[1] = new Array(<?php echo return_array_JS_us_groupes(); ?>);
store_exec[2] = new Array(<?php echo return_array_JS_users(); ?>);

function init_exec(formulaire, box1, box2, defBox1, defBox2) {
  vbox1 = formulaire.elements[box1];
  if(defBox1 != 0) {
    vbox1.options[defBox1].selected = true;
    populate_exec(formulaire, box1, box2, defBox2);
  }
}

function populate_exec(formulaire, box1, box2, defBox2) {
  vbox1 = formulaire.elements[box1];
  vbox2 = formulaire.elements[box2];
  if(vbox1.value != 0) {
    list = store_exec[vbox1.value];

    vbox2.options.length = 0;
    j = 1;
    for(i=0;i<=list.length;i++) {
      vbox2.options[i] = new Option(list[j][1],list[j][0]);
      j++;
    }
  } else{
    window.alert("Veuillez choisir une executant.");
  }
}