Would like to search areas with subcategories in a select box

I have a table called 'areas'. I would like to a have a select box that would show this:


     East Village
     Upper West Side
Saten Island......

This would be based on an mysql call in php.

I would like to do it with one table.
I have used zones to show subcategories.
I have attached code so far to grab all the areas but need to subcategorise.

CREATE TABLE `areas` (
  `area_ID` smallint(4) NOT NULL DEFAULT '0',
  `area` varchar(40) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL DEFAULT '',
  `zone` varchar(40) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL DEFAULT '',
  `area_link` varchar(40) CHARACTER SET latin1 COLLATE latin1_general_ci NOT NULL DEFAULT '',
  PRIMARY KEY (`area_ID`)

-- Dumping data for table `areas`

INSERT INTO `areas` VALUES(1, 'Brooklynn', '', '');
INSERT INTO `areas` VALUES(2, 'Bronx', '', '');
INSERT INTO `areas` VALUES(3, 'Long Island', '', '');
INSERT INTO `areas` VALUES(4, 'Manhattan', '', '');
INSERT INTO `areas` VALUES(5, 'Staten Island', '', '');
INSERT INTO `areas` VALUES(6, 'Upstate', '', '');
INSERT INTO `areas` VALUES(7, 'Westchester', '', '');
INSERT INTO `areas` VALUES(8, 'Upper East Side', '4', '');
INSERT INTO `areas` VALUES(9, 'Upper West Side', '4', '');
INSERT INTO `areas` VALUES(10, 'Midtown', '4', '');
INSERT INTO `areas` VALUES(11, 'Greenwich Village', '4', '');
INSERT INTO `areas` VALUES(12, 'East Village', '4', '');
INSERT INTO `areas` VALUES(13, 'Lower East Side', '4', '');
INSERT INTO `areas` VALUES(14, 'Financial District', '4', '');
INSERT INTO `areas` VALUES(15, 'Harlem', '4', '');
INSERT INTO `areas` VALUES(16, 'Chelsea', '4', '');
INSERT INTO `areas` VALUES(17, 'Gamercy', '4', '');
INSERT INTO `areas` VALUES(18, 'Soho', '4', '');
INSERT INTO `areas` VALUES(19, 'Tribeca', '4', '');
INSERT INTO `areas` VALUES(20, 'Morningside Heights', '4', '');
INSERT INTO `areas` VALUES(21, 'Washington Heights', '4', '');
INSERT INTO `areas` VALUES(22, 'Inwood', '4', '');

//php to get the areas

$getarea = mysql_query ("SELECT * FROM areas ORDER BY area ");
if ($arearow = mysql_fetch_array($getarea)) {
	while ($arearow = mysql_fetch_array($getarea));

//display the box

echo("<select name=\"$field\"  id=\"$field\"><option value=\"".$value."\"selected=\"selected\">".$selected."</option>");
	while (list ($key, $val) = each ($areaselect)) { 
						echo "<option value=\"".$key."\">".$val."</option>"; 

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Gurvinder Pal SinghCommented:
check the following link to see, on how to create sub-menus in javascript

some thing link this?

Sorry I didnt get your question?

Do you want to show area in dropdown only or
area and subcategories.

In table how area and subcategory are related? I didnt see any relation between them?

mmguideAuthor Commented:
There is an answer here using a two-dimensional array.
This helped

//get areas
if ($arearow = mysql_fetch_array($getarea)) {
	while ($arearow = mysql_fetch_array($getarea));

//print select box
 foreach ($arealoc as $akey => $avalue) {
					//while (list ($akey, $aval) = each($arealoc)){  
							print'<optgroup label="' . $avalue . '">';
							echo "<option value=\"".$akey."\">".$arealoc[$akey]."</option>";
						foreach ($zonelist[$akey] as $zkey => $zvalue) {
							echo "<option value=\"".$zkey."\">".$zvalue."</option>";

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