// JS helper functions for YM4R

function addOverWindowToMarker(marker,info,target) {
	GEvent.addListener(marker,"mouseover", function() { 
			var CDivPixel = map.fromLatLngToDivPixel(map.getCenter());
			var point = map.fromLatLngToDivPixel(marker.getPoint());
			var fromCenter = subGPoints(point,CDivPixel);
			point.y = (map.getSize().height/2)+fromCenter.y;
			point.x = (map.getSize().width/2)+fromCenter.x;
			$('map_item_overlay').setStyle(
				{"position":"absolute","top":(point.y-map.getContainer().offsetTop)+"px","left":(point.x-map.getContainer().offsetLeft)+"px"}
			);
			$('map_item_overlay').update(info);
			$('map_item_overlay').show();
		}
	);
	GEvent.addListener(marker,"mouseout", function() {
		$('map_item_overlay').hide();
	});
	if(target != "") {
		GEvent.addListener(marker,"click", function() {
			window.location=target;
		})
	}
	return marker;
}

function subGPoints(a,b) {
	return new GPoint(a.x-b.x,a.y-b.y);
}


function addDraggableMarker(marker,lat,lng) {
	GEvent.addListener(marker,"dragend", function() {
		var point = marker.getPoint();
		$(lat).value = point.lat();
		$(lng).value = point.lng();
	});
        GEvent.addListener(map,"zoomend", function() {
                $('event_zoomlevel').value = map.getZoom();
        });
	return marker;
}

function calculateMarkerPosition(map,markerLatLngPoint){
	gmapTopLeftLatLng=map.fromContainerPixelToLatLng(new GPoint(0,0));
	gmapTopLeftPixel=map.fromLatLngToDivPixel(gmapTopLeftLatLng);
	myMarkerDivPixel=map.fromLatLngToDivPixel(markerLatLngPoint);
	markerTop=getAbsoluteTop(map.getContainer())-gmapTopLeftPixel.y+myMarkerDivPixel.y;
	markerLeft=getAbsoluteLeft(map.getContainer())-gmapTopLeftPixel.x+myMarkerDivPixel.x;
    return{top:markerTop,left:markerLeft};
}



function addInfoWindowToMarker(marker,info,options){
	GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml(info,options);});
	return marker;
}

function addInfoWindowTabsToMarker(marker,info,options){
     GEvent.addListener(marker, "click", function() {marker.openInfoWindowTabsHtml(info,options);});
     return marker;
}

function addPropertiesToLayer(layer,getTile,copyright,opacity,isPng){
    layer.getTileUrl = getTile;
    layer.getCopyright = copyright;
    layer.getOpacity = opacity;
    layer.isPng = isPng;
    return layer;
}

function addOptionsToIcon(icon,options){
    for(var k in options){
	icon[k] = options[k];
    }
    return icon;
}

function addCodeToFunction(func,code){
    if(func == undefined)
	return code;
    else{
	return function(){
	    func();
	    code();
	}
    }
}

function addGeocodingToMarker(marker,address){
    marker.orig_initialize = marker.initialize;
    orig_redraw = marker.redraw;
    marker.redraw = function(force){}; //empty the redraw method so no error when called by addOverlay.
    marker.initialize = function(map){
	new GClientGeocoder().getLatLng(address,
					function(latlng){
	    if(latlng){
		marker.redraw = orig_redraw;
		marker.orig_initialize(map); //init before setting point
		marker.setPoint(latlng);
	    }//do nothing
	});
    };
    return marker;
}



GMap2.prototype.centerAndZoomOnMarkers = function(markers) {
     var bounds = new GLatLngBounds(markers[0].getPoint(),
				    markers[0].getPoint());
     for (var i=1, len = markers.length ; i<len; i++) {
	 bounds.extend(markers[i].getPoint());
     }
     
     this.centerAndZoomOnBounds(bounds);
 } 

GMap2.prototype.centerAndZoomOnPoints = function(points) {
     var bounds = new GLatLngBounds(points[0],
				    points[0]);
     for (var i=1, len = points.length ; i<len; i++) {
	 bounds.extend(points[i]);
     }
     
     this.centerAndZoomOnBounds(bounds);
 } 

GMap2.prototype.centerAndZoomOnBounds = function(bounds) {
    var center = bounds.getCenter();
    this.setCenter(center, this.getBoundsZoomLevel(bounds));
} 

//For full screen mode
function setWindowDims(elem) {
    if (window.innerWidth){
	elem.style.height = (window.innerHeight) + 'px;';
	elem.style.width = (window.innerWidth) + 'px;';
    }else if (document.body.clientWidth){
	elem.style.width = (document.body.clientWidth) + 'px';
	elem.style.height = (document.body.clientHeight) + 'px';
    }
}

ManagedMarker = function(markers,minZoom,maxZoom) {
    this.markers = markers;
    this.minZoom = minZoom;
    this.maxZoom = maxZoom;
}

//Add the markers and refresh
function addMarkersToManager(manager,managedMarkers){
    for(var i = 0, length = managedMarkers.length; i < length;i++) {
	mm = managedMarkers[i];
	manager.addMarkers(mm.markers,mm.minZoom,mm.maxZoom);
    }
    manager.refresh();
    return manager;
}


var INVISIBLE = new GLatLng(0,0); //almost always invisible

if(self.Event && Event.observe){
    Event.observe(window, 'unload', GUnload);
}else{
    window.onunload = GUnload;
}