// calculate marker radius from magnitude, both formulas have equal radii at mag=1.2
function mag2radius(mag) {
	return 400*mag;				// radius proportional to magagnitude
	// return 8.104*Math.pow(30,mag)	// radius proportional to energy
};

// set height of eventlist div
function sleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}
function setInfoHeight() {
	var height = $('div.map').height() - 36;
	$('div.info').height(height);
	//$('.tab').height(height-80);
	//$('#eventtable').height(height-100);
};

/* get region and regionID of a location */
function getLocation(lat, lng) {
	var region = false;
	var regionID;
	var regions = [
		['Monschau', 'Schleiden', 'Bad Münstereifel', 'Rheinland-Pfalz', 'Rheinland-Pfalz', 'Rheinland-Pfalz', 'Hessen', 'Hessen', 'Hessen', 'Hessen'],
		['Aachen', 'Zülpich', 'Euskirchen', 'Bonn', 'Rheinland-Pfalz', 'Rheinland-Pfalz', 'Hessen', 'Hessen', 'Hessen', 'Hessen'],
		['Geilenkirchen', 'Düren', 'Köln', 'Köln-Mülheim', 'Waldbröl', 'Freudenberg', 'Siegen', 'Hessen', 'Hessen', 'Hessen'],
		['Heinsberg', 'Mönchengladbach', 'Neuss', 'Solingen', 'Gummersbach', 'Olpe', 'Schmallenberg', 'Bad Berleburg', 'Hessen', 'Hessen'],
		['Nettetal', 'Krefeld', 'Düsseldorf', 'Wuppertal', 'Hagen', 'Iserlohn', 'Arnsberg', 'Brilon', 'Hessen', 'Hessen'],
		['Geldern', 'Moers', 'Duisburg', 'Essen', 'Dortmund', 'Unna', 'Soest', 'Büren', 'Marsberg', 'Warburg'],
		['Kleve', 'Wesel', 'Dorsten', 'Recklinghausen', 'Lünen', 'Hamm/Westfalen', 'Beckum', 'Lippstadt', 'Paderborn', 'Bad Driburg'],
		['Emmerich am Rhein', 'Bocholt', 'Borken', 'Coesfeld', 'Münster', 'Warendorf', 'Rheda-Wiedenbrück', 'Gütersloh', 'Detmold', 'Bad Pyrmont'],
		['The Netherlands', 'The Netherlands', 'Vreden', 'Ahaus', 'Steinfurt', 'Lengerich', 'Bad Ilburg', 'Bielefeld', 'Herford', 'Niedersachsen'],
		['The Netherlands', 'The Netherlands', 'The Netherlands', 'Niedersachsen', 'Rheine', 'Ibbenbüren', 'Niedersachsen', 'Lübbecke', 'Minden', 'Niedersachsen']
	];
	if ( lat >= 50.4 && lat < 52.4 && lng >= 6.0 && lng < 9.333333 ) {
		var latIndex = Math.floor((lat-50.4)*5); // 5 tiles per degree
		var lngIndex = Math.floor((lng-6.0)*3);  // 3 tiles per degree
		region = regions[latIndex][lngIndex];
	};
    if ( region != 'The Netherlands' ) {
            regionID = 5500-latIndex*200+lngIndex*2+2;
	};
	if ( lat >= 50.9 && lat < 51.1 && lng >= 5.666666 && lng < 6.0 ) {
		region = 'Selfkant';
		regionID = 5000;
	};
    return [ region, regionID ];
};

// window resize
$( window ).resize(function() {
	setInfoHeight();
});

// create global vars
var map
var eventTable = {};
var eventDetails = {};
var stationTable = {};
var eventMarkerOpacity = 0.3;
var stationMarkerOpacity = 0.5;
var zoomFocus = 12;
var zoomDefault = 9;
var mapCentreDefault = [51.85, 7.0];
var minMag = 1.2;

// run when ready
$(document).ready(function() {
	// AJAX setup
	$.ajaxSetup({timeout: 15000}); // 15 seconds
	// adjust height of infocontainer
	setInfoHeight();
	// create tabs
	var tabOptions = {
		active: 0,
		disabled: [2, 3],
	};
	$('#tabs').tabs(tabOptions);
	// $('.ui-tabs-nav').sortable();
});