function saveImprovementsBuildingsClasses($xmlStr)
 {
     if (!($domDoc = domxml_open_mem($xmlStr))) {
         return false;
     }
     $improvementsBuildingsClasses = new ImprovementsBuildingsClasses();
     $improvementsBuildingsClasses->parseDomDocument($domDoc);
     $ret = $improvementsBuildingsClasses->insertRecord();
     return $ret;
 }