<select name="item8" id="item8" onchange="getPrice(this.id)" />
      <option value="" >Select here</option>
      <?php
$sql = "SELECT ItemID, ItemName, Price FROM itemavail ORDER BY ItemName";
$rs = mysql_query($sql);
while($row = mysql_fetch_array($rs))
{
  echo "<option value=\"".$row['Price']."\">".$row['ItemName']."\n  ";
}

?>
      </span>
    </div>
      </select>

im using this code to make selection field. Here i want to get a Item ID when selecting Item. bt i cant change that Price as the "value=" of the Option. because i need value as a price for the bill counting. here i use another text field to enter quantity of item. here i need is when user select item and enter quantity Item table should be deduct that quantity from item table quantity.. please HELp mee..

im using this code to make selection field. Here i want to get a Item ID when selecting Item. bt i cant change that Price as the "value=" of the Option. because i need value as a price for the bill counting

OK, so currently for every record you are sending something similar to: <option value="12">...</option> Why not just send something like: <option value="xxx___12">...</option> Where "xxx" is your ItemId and "___" is just a "delimiter".

echo sprintf('<option value="%s___%s">%s</option>' . PHP_EOL, $row['ItemId'], $row['Price'], $row['ItemName']);

Thus, all you would need to do when you get that value, is split the value at the delimiter:

list( $itemId, $itemValue) = explode("___",$_POST['item8']);
echo 'Item: '.$itemId . '=' . $itemValue;
commented: really good +1

heyyy... thnk you very much for your HELP... reallly Appreciate that.. !!