jQuery(document).ready(function($){
	$('#job_category').change(function(){
		$('.disabled, #job_sub_category').attr('disabled', true);
		$.getJSON("ajax/update_options.php?job_category="+$(this).val(), function(j){
					var options = '';
					for(var i = 0; i < j.length; i++){
						options += '<option value="'+j[i].optionValue+'">'+j[i].optionName+'</option>';
					}
					$('#job_sub_category').html(options);
					$('.disabled, #job_sub_category').removeAttr('disabled');
				});
	});
	$('#location').change(function(){
		$('.disabled, #sub_location').attr('disabled', true);
		$.getJSON("ajax/update_options.php?location="+$(this).val(), function(j){
					var options = '';
					for(var i = 0; i < j.length; i++){
						options += '<option value="'+j[i].optionValue+'">'+j[i].optionName+'</option>';
					}
					$('#sub_location').html(options);
					$('.disabled, #sub_location').removeAttr('disabled');
				});
	});
	
	$('#twitter_jobs').submit(function(){
		if($('#twitter_username').val() == ''){
			alert('Twitter username can\'t be empty!');
			return false;
		}
		if($('#twitter_password').val() == ''){
			alert('Twitter password can\'t be empty!');
			return false;
		}
			     
		return true;
	});
});