function IEgetNonAsync(method, url) {
  var XHR = null;
  if(window.XMLHttpRequest) // Firefox
  	XHR = new XMLHttpRequest();
  else if(window.ActiveXObject) // Internet Explorer
  	XHR = new ActiveXObject("Microsoft.XMLHTTP");
  else { // XMLHttpRequest non supporté par le navigateur
  	alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
  }
  XHR.open(method, url+'&dataprocess='+new Date(), false);
  XHR.send(null);
  return XHR.responseText;
}

function fixSelects(action) {
  var mySelects = document.getElementsByTagName("select");
  for (i=0; i<mySelects.length; i++)
    mySelects[i].style.visibility = (action=='show') ? "visible" : "hidden";
}