Update leaflet with master + https://github.com/danzel/Leaflet/tree/oldie-fixes

lib/leaflet-dist/leaflet-src.js

@@ -21,7 +21,7 @@ if (typeof exports !== undefined + '') {
 	window.L = L;
 }
 
-L.version = '0.4.1';
+L.version = '0.4.2';
 
 
 /*
@@ -756,7 +756,7 @@ L.DomUtil = {
 			value = Math.round(value * 100);
 
 			if (filter) {
-				filter.Enabled = (value === 100);
+				filter.Enabled = (value !== 100);
 				filter.Opacity = value;
 			} else {
 				el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
@@ -6932,16 +6932,35 @@ L.Control.Layers = L.Control.extend({
 		this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none');
 	},
 
-	_addItem: function (obj, onclick) {
-		var label = document.createElement('label');
+	// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
+	_createRadioElement: function (name, checked) {
 
-		var input = document.createElement('input');
-		if (!obj.overlay) {
-			input.name = 'leaflet-base-layers';
+		var radioHtml = '<input type="radio" name="' + name + '"';
+		if (checked) {
+			radioHtml += ' checked="checked"';
 		}
-		input.type = obj.overlay ? 'checkbox' : 'radio';
+		radioHtml += '/>';
+
+		var radioFragment = document.createElement('div');
+		radioFragment.innerHTML = radioHtml;
+
+		return radioFragment.firstChild;
+	},
+
+	_addItem: function (obj) {
+		var label = document.createElement('label'),
+		    input,
+		    checked = this._map.hasLayer(obj.layer);
+
+		if (obj.overlay) {
+			input = document.createElement('input');
+			input.type = 'checkbox';
+			input.defaultChecked = checked;
+		} else {
+			input = this._createRadioElement('leaflet-base-layers', checked);
+		}
+
 		input.layerId = L.Util.stamp(obj.layer);
-		input.defaultChecked = this._map.hasLayer(obj.layer);
 
 		L.DomEvent.on(input, 'click', this._onInputClick, this);