function initInfoFrame(db) {
  var ksi = getQueryStringValue('ksi');
  if (ksi != '') {
    showFrame('infoFrame','/calculatie.aspx?db=' + db + '&ksi=' + ksi);
  }
  else {
    showFrame('infoFrame','/bolInitFrame.aspx?db=' + db);
  }
  
  var seek = getQueryStringValue('seek');
  if (seek == 'leverancier') {
    showFrame('infoFrame','/calculatie-zoek-leverancier?db=' + db + '&id=' + getQueryStringValue('id'));
  }
}