function submitRecherche() {
  $rech = $("#rech");
  var param = ''; var val;
  val = $rech.find("select[id$='_cr']").val();
  if (val !=  undefined && val != '' && val != '0') {
    param = param + 'rchCr=' + val + '&';
  }
  val = $rech.find("input[id$='_cp']").val();
  if (val != undefined && val != '' && val != '0') {
    param = param + 'rchCp=' + val + '&';
  }
  val = $rech.find("input[id$='_vi']").val();
  if (val != undefined && val != '' && val != '0') {
    param = param + 'rchVi=' + val + '&';
  }
  val = $rech.find("select[id$='_re']").val();
  if (val != undefined && val != '' && val != '0') {
    param = param + 'rchRe=' + val + '&';
  }
  val = $rech.find("select[id$='_sf']").val();
  if (val != undefined && val != '' && val != '0') {
    param = param + 'rchSf=' + val + '&';
  }
  val = $rech.find("select[id$='_af']").val();
  if (val != undefined && val != '' && val != '0') {
    param = param + 'rchAf=' + val + '&';
  }
  if (param.length > 0) {
    param = param.substr(0, param.length - 1);
  }
  location.href = 'resultat.aspx?' + param;
}