Dev: make sure all files can pass JSHint!

grunt.js

@@ -285,10 +285,7 @@ grunt.initConfig({
 		})
 	},
 	lint: {
-		ui: grunt.file.expandFiles( "ui/*.js" ).filter(function( file ) {
-			// TODO remove items from this list once rewritten
-			return !( /(mouse)\.js$/ ).test( file );
-		}),
+		ui: "ui/*.js",
 		grunt: [ "grunt.js", "build/**/*.js" ],
 		tests: "tests/unit/**/*.js"
 	},

ui/jquery.ui.mouse.js

@@ -14,7 +14,7 @@
 (function( $, undefined ) {
 
 var mouseHandled = false;
-$( document ).mouseup( function( e ) {
+$( document ).mouseup( function() {
 	mouseHandled = false;
 });
 
@@ -111,7 +111,7 @@ $.widget("ui.mouse", {
 
 	_mouseMove: function(event) {
 		// IE mouseup check - mouseup happened when mouse was out of window
-		if ($.ui.ie && !(document.documentMode >= 9) && !event.button) {
+		if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
 			return this._mouseUp(event);
 		}
 
@@ -155,15 +155,15 @@ $.widget("ui.mouse", {
 		);
 	},
 
-	_mouseDelayMet: function(event) {
+	_mouseDelayMet: function(/* event */) {
 		return this.mouseDelayMet;
 	},
 
 	// These are placeholder methods, to be overriden by extending plugin
-	_mouseStart: function(event) {},
-	_mouseDrag: function(event) {},
-	_mouseStop: function(event) {},
-	_mouseCapture: function(event) { return true; }
+	_mouseStart: function(/* event */) {},
+	_mouseDrag: function(/* event */) {},
+	_mouseStop: function(/* event */) {},
+	_mouseCapture: function(/* event */) { return true; }
 });
 
 })(jQuery);