function write_utf8(&$worksheet,$x,$y,$text,$format=null){
		$worksheet->setInputEncoding('UTF-8');
		$worksheet->write($x,$y,$text,$format);
	}



	function add_excel($date_from,$date_to,$data,$title='',$headers=array()) {
		require_once 'Spreadsheet/Excel/Writer.php';
		$row=0;
		$workbook = new Spreadsheet_Excel_Writer();
		$workbook->setVersion(8);
		$workbook->send('otchet.xls');
		/*stils*/
		$format_head =& $workbook->addFormat();
		$format_head->setHAlign('center');
		$format_head->setBold(1);
		
		$format_cell =& $workbook->addFormat();
		$format_cell->setVAlign('vcenter');
		$format_cell->setHAlign('center');
		$format_cell->setTextWrap();
		$format_cell->setBorder(1);
		$format_cell->setSize(9);
		
		$worksheet =& $workbook->addWorksheet('Otchet');

		$worksheet->setColumn(0,3,30);
		
		$worksheet->setMerge($row,0,$row,(count($headers)==0?0:count($headers)-1));
		write_utf8($worksheet,$row++,0,$title,$format_head);
		
		if (count($headers)>0) {
			$column = 0;
			foreach ($headers as $head) write_utf8($worksheet,$row,$column++,$head,$format_cell);
			$row++;
		}
	
		$column_key = '';
		if (is_array($data)) {
			foreach ($data as $d) {
				$column = 0;
				if ($d[0]!=$column_key) {
					$total = count_from_key($data,$d[0]);
					write_utf8($worksheet,$row,0,$d[0],$format_cell);
					write_utf8($worksheet,$row,1,'Vsego:',$format_cell);
					write_utf8($worksheet,$row,2,$total,$format_cell);
					$row++;
					$column_key=$d[0];
				}
				foreach ($d as $p) write_utf8($worksheet,$row,$column++,$p,$format_cell);			
//$test=  $d[0].  " = ".$d[1]." = ".$d[2].  "; \n";					
//$handle=fopen("statistika.txt","a+");
//fwrite($handle,$test);
// fclose($handle);
				$row++;
			}
		}
		$workbook->close();
	}