Fixes #1

Author: mzabriskie

lib/draggable.js

@@ -44,6 +44,28 @@ function matchesSelector(el, selector) {
 	}
 }
 
+function addEvent(el, event, handler) {
+	if (!el) { return; }
+	if (el.attachEvent) {
+		el.attachEvent('on' + event, handler);
+	} else if (el.addEventListener) {
+		el.addEventListener(event, handler, true);
+	} else {
+		el['on' + event] = handler;
+	}
+}
+
+function removeEvent(el, event, handler) {
+	if (!el) { return; }
+	if (el.detachEvent) {
+		el.detachEvent('on' + event, handler);
+	} else if (el.removeEventListener) {
+		el.removeEventListener(event, handler, true);
+	} else {
+		el['on' + event] = null;
+	}
+}
+
 module.exports = React.createClass({
 	displayName: 'Draggable',
 
@@ -229,7 +251,8 @@ module.exports = React.createClass({
 
 		this.props.onStart(e, createUIEvent(this));
 
-		window.addEventListener('mousemove', this.handleMouseMove);
+		addEvent(window, 'mousemove', this.handleMouseMove);
+		addEvent(window, 'mouseup', this.handleMouseUp);
 	},
 
 	handleMouseUp: function (e) {
@@ -243,7 +266,8 @@ module.exports = React.createClass({
 
 		this.props.onStop(e, createUIEvent(this));
 
-		window.removeEventListener('mousemove', this.handleMouseMove);
+		removeEvent(window, 'mousemove', this.handleMouseMove);
+		removeEvent(window, 'mouseup', this.handleMouseUp);
 	},
 
 	handleMouseMove: function (e) {