on select write to database

<!-- HTML -->
<form method="post">
	<select name="priority" class="field80" onChange="updatePriority('<?=$item['exception_id']?>')" style="margin:0;" <?=$disabled?>>
		<option value="high">high</option>
		<option value="medium">medium</option>
		<option value="low">low</option>
	</select>
</form>

<!-- jQuery -->
<script type="text/javascript">
	function updatePriority(exception_id){
		$.ajax({
			data: data,
			type: 'post',
			url: 'ajax.php?page=ajx_exception_priority',
			success: function(data){
				alert("Data save: "+ data)
			}
		});
	}
</script>

<!-- PHP -->
<?php
	if (isset($_POST['priority'])) {
		query("
			UPDATE
				`exceptions` (
					`priority`)
			VALUES (
				". $_POST['priority'] .")
			WHERE
				`exception_id` = ". $exception_id ."
			");
	}
?>