var map;
//var markers;
var popup;
var epsg4326 = new OpenLayers.Projection("EPSG:4326");
var markers = new OpenLayers.Layer.Markers("Puncte");

function createMap(divName, centre, zoom) {
   OpenLayers.Util.onImageLoadError = function() {
      this.src = "media/images/locus.png";
   }

   map = new OpenLayers.Map(divName,
                            { //maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
                              numZoomLevels: 19,
                              maxResolution: 156543,
                              units: 'm',
                              //projection: "EPSG:900913",
                              controls: [
                new OpenLayers.Control.Navigation(),
                new OpenLayers.Control.LayerSwitcher(),
                new OpenLayers.Control.PanZoomBar(),
                new OpenLayers.Control.ScaleLine(),
                new OpenLayers.Control.Permalink('permalink'),
                new OpenLayers.Control.Permalink('editlink', 'http://www.openstreetmap.org/edit.html'),
                new OpenLayers.Control.MousePosition(),
                new OpenLayers.Control.OverviewMap(),
                //new OpenLayers.Control.KeyboardDefaults(),
                new OpenLayers.Control.Attribution()
                              ],
                              displayProjection:  epsg4326 });


   var cmattrib = '&copy <a href="http://www.cloudmade.com">CloudMade</a><br />';
   var cmstandardattrib = '<b>standard</b><br />' + cmattrib;
   var cmmobileattrib = '<b>mobile</b><br />' + cmattrib;
   var cmnonamesattrib = '<b>nonames</b><br />A debug layer for OSM contributors<br />' + cmattrib;

   var mapnik = new OpenLayers.Layer.TMS("CloudMade Fresh",
                                         ["http://a.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/997/256/",
                                          "http://b.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/997/256/",
					  "http://c.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/997/256/"],
                                         { type: 'png', getURL: getTileURL, displayOutsideMaxExtent: true,
					   attribution: cmstandardattrib, transitionEffect: 'resize'});
   //map.addLayer(mapnik);

   var mobile = new OpenLayers.Layer.TMS("Linii Subtiri",
                                            ["http://a.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/2/256/",
                                             "http://b.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/2/256/",
                                             "http://c.tile.cloudmade.com/8bafab36916b5ce6b4395ede3cb9ddea/2/256/"],
                                             { type: 'png', getURL: getTileURL, displayOutsideMaxExtent: true,
					       attribution: cmmobileattrib, transitionEffect: 'resize'});
   
   
    var cloudmade = new OpenLayers.Layer.CloudMade("Standard", {key: 'de3c909ada2558028ff321b569e4a00f', attribution: cmstandardattrib});
		map.addLayer(cloudmade);
        map.addLayer(mobile);

   // var ghyb = new OpenLayers.Layer.Google( "Google Hybrid", {type: G_HYBRID_MAP, numZoomLevels: 20} );
   // map.addLayer(ghyb);
   
   //var epsg4326 = new OpenLayers.Projection("EPSG:4326");


		
		//var markers = new OpenLayers.Layer.Markers("Puncte");
		map.addLayer(markers);
   

   if (!map.getCenter()) map.setCenter(centre, zoom);
   return map;
}

function getTileURL(bounds) {
   var res = this.map.getResolution();
   var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
   var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
   var z = this.map.getZoom();
   var limit = Math.pow(2, z);

   if (y < 0 || y >= limit)
   {
     return null;
   }
   else
   {
     x = ((x % limit) + limit) % limit;

     var url = this.url;
     var path = z + "/" + x + "/" + y + ".png";

     if (url instanceof Array) {
         url = this.selectUrl(path, url);
     }
     return url + path;

   }
}

function mercatorToLonLat(merc) {
   var lon = (merc.lon / 20037508.34) * 180;
   var lat = (merc.lat / 20037508.34) * 180;

   lat = 180/Math.PI * (2 * Math.atan(Math.exp(lat * Math.PI / 180)) - Math.PI / 2);

   return new OpenLayers.LonLat(lon, lat);
}

function lonLatToMercator(ll) {
   var lon = ll.lon * 20037508.34 / 180;
   var lat = Math.log(Math.tan((90 + ll.lat) * Math.PI / 360)) / (Math.PI / 180);

   lat = lat * 20037508.34 / 180;

   return new OpenLayers.LonLat(lon, lat);
}

function scaleToZoom(scale) {
   return Math.log(360.0/(scale * 512.0)) / Math.log(2.0);
}

function addScript(url) {
			var script = document.createElement('script');
			script.type = 'text/javascript';
			script.src = url;
			document.getElementsByTagName('head')[0].appendChild(script);
		}
		
function geocodingCallback(response) {
			var bounds = new OpenLayers.Bounds();
			bounds.extend(new OpenLayers.LonLat(response.bounds[0][1], response.bounds[0][0]));
			bounds.extend(new OpenLayers.LonLat(response.bounds[1][1], response.bounds[1][0]));
			
			map.zoomToExtent(bounds.transform(epsg4326, map.getProjectionObject()));

			for (var i = 0; i < response.features.length; i++) {
				var coords = response.features[i].centroid.coordinates,
					lonlat = new OpenLayers.LonLat(coords[1], coords[0]);
				//alert("hi" + coords[1] +coords[0]);
				var marker = new OpenLayers.Marker(
					lonlat.transform(epsg4326, map.getProjectionObject()));
				markers.addMarker(marker);
			}
		}
        
    function explain() {
    //addScript('http://geocoding.cloudmade.com/BC9A493B41014CAABB98F0471D759707/geocoding/closest/poi/50.05563,13.86563.js?callback=geocodingCallback');
    }
    
    function cauta(form) {
    //alert(form);
    var query = form.find.value + ", " +form.city.value + ", Romania";
		//alert(query);
		addScript('http://geocoding.cloudmade.com/' + 
			'de3c909ada2558028ff321b569e4a00f/geocoding/find/' + 
			query + '.js?callback=geocodingCallback');
    
    
    
    }