function get_el(id) {
  if      (document.layers)         return document.layers[id];         // NC 4
  else if (document.all)            return document.all[id];            // IE 4
  else if (document.getElementById) return document.getElementById(id); // DOM
  else                              return null;
}

function DropDownMenu(id) {
  var a=get_el('submen'+id);
  if (a==null) return;
  a.style.display='block';
}

function DropUpMenu(id) {
  var a=get_el('submen'+id);
  if (a==null) return;
  a.style.display='none';
}

function wo(url, width, height) {
  var a='www'+Math.round(Math.random()*1000000);
  var www = window.open(url, a, 'toolbar=1,location=1,menubar=1,status=1,scrollbars=1,left='+(screen.width/2-width/2)+',top='+(screen.height/2-height/2-100)+',width='+width+',height='+height);
  www.focus();
};

function setmode(mode) {
  var inumdiv=document.getElementById('inum');
  if (mode=='i') {
    inumdiv.innerHTML='Инструкторский № TDI/SDI';
  }
  if (mode=='s') {
    inumdiv.innerHTML='Логин';
  }
  if (mode=='m') {
    inumdiv.innerHTML='Логин';
  }
}

function print(form_id) {
  document.forms['checkform'].action='index.php?p=printform&form_id='+form_id;
  document.forms['checkform'].elements['submit'].click();
}