function fltr(id) {
	switch(id) {
		case 2:
			document.getElementById("frm1").style.display='none';
			document.getElementById("frm2").style.display='block';
			document.getElementById("frm3").style.display='none';
			break;
		case 3:
			document.getElementById("frm1").style.display='none';
			document.getElementById("frm2").style.display='none';
			document.getElementById("frm3").style.display='block';
			break;
		default:
			document.getElementById("frm1").style.display='block';
			document.getElementById("frm2").style.display='none';
			document.getElementById("frm3").style.display='none';
	}
	document.getElementById("filterfrms").style.backgroundImage = "url('/images/filter_bg_"+id+".png')"
	return true;
}

$(document).ready(function(){
	$('#district1').change(function () {
		var district_val = $('#district1').val();
		if (district_val == '-1') {
			$('#location1').html('');
			$('#location1').attr('disabled', true);
			return(false);
		}
		$('#location1').attr('disabled', true);
		$('#location1').html('<option>загрузка...</option>');

		var url = '/get_locations.php?district=' + district_val;
		$.get(
			url,
			function (result) {
				if (result.type == 'error') {
					alert(error);
					return(false);
				}
				else {
					var options = '';
					$(result.districts).each(function() {
						options = options + '<option value="' + $(this).attr('id') + '">' + $(this).attr('title') + '</option>';
					});
					$('#location1').html(options);
					$('#location1').attr('disabled', false);
				}
			},
			"json"
		);
	});

	$('#district2').change(function () {
		var district_val = $('#district2').val();
		if (district_val == '-1') {
			$('#location2').html('');
			$('#location2').attr('disabled', true);
			return(false);
		}
		$('#location2').attr('disabled', true);
		$('#location2').html('<option>загрузка...</option>');

		var url = '/get_locations.php?district=' + district_val;
		$.get(
			url,
			function (result) {
				if (result.type == 'error') {
					alert(error);
					return(false);
				}
				else {
					var options = '';
					$(result.districts).each(function() {
						options = options + '<option value="' + $(this).attr('id') + '">' + $(this).attr('title') + '</option>';
					});
					$('#location2').html(options);
					$('#location2').attr('disabled', false);
				}
			},
			"json"
		);
	});

	$('#district3').change(function () {
		var district_val = $('#district3').val();
		if (district_val == '-1') {
			$('#location3').html('');
			$('#location3').attr('disabled', true);
			return(false);
		}
		$('#location3').attr('disabled', true);
		$('#location3').html('<option>загрузка...</option>');

		var url = '/get_locations.php?district=' + district_val;
		$.get(
			url,
			function (result) {
				if (result.type == 'error') {
					alert(error);
					return(false);
				}
				else {
					var options = '';
					$(result.districts).each(function() {
						options = options + '<option value="' + $(this).attr('id') + '">' + $(this).attr('title') + '</option>';
					});
					$('#location3').html(options);
					$('#location3').attr('disabled', false);
				}
			},
			"json"
		);
	});

});