add layer getElement methods

src/layer/ImageOverlay.js

@@ -101,6 +101,10 @@ L.ImageOverlay = L.Layer.extend({
 		return this._bounds;
 	},
 
+	getElement: function () {
+		return this._image;
+	},
+
 	_initImage: function () {
 		var img = this._image = L.DomUtil.create('img',
 				'leaflet-image-layer ' + (this._zoomAnimated ? 'leaflet-zoom-animated' : ''));

src/layer/Popup.js

@@ -103,6 +103,10 @@ L.Popup = L.Layer.extend({
 		return this;
 	},
 
+	getElement: function () {
+		return this._container;
+	},
+
 	update: function () {
 		if (!this._map) { return; }
 

src/layer/marker/Marker.js

@@ -82,6 +82,10 @@ L.Marker = L.Layer.extend({
 		return this;
 	},
 
+	getElement: function () {
+		return this._icon;
+	},
+
 	update: function () {
 
 		if (this._icon) {

src/layer/vector/Path.js

@@ -74,6 +74,10 @@ L.Path = L.Layer.extend({
 		return this;
 	},
 
+	getElement: function () {
+		return this._path;
+	},
+
 	_clickTolerance: function () {
 		// used when doing hit detection for Canvas layers
 		return (this.options.stroke ? this.options.weight / 2 : 0) + (L.Browser.touch ? 10 : 0);