diff --git a/index.html b/index.html
index 7cb76ae..76d1e89 100644
--- a/index.html
+++ b/index.html
@@ -660,6 +660,7 @@ <h3>Can I help?</h3>
     <script src="./vendor/i18next-1.10.1.min.js"></script>
     <script src="./webui/i18n.js"></script>
     <script src="./vendor/jquery-ui/jquery-ui.js"></script>
+    <script src="./vendor/jquery.ui.touch-punch.min.js"></script>
     <script src="./vendor/lodash.min.js"></script>
     <script src="./vendor/backbone-min.js"></script>
     <script src="./vendor/joint.min.js"></script>
diff --git a/install-jslibs.sh b/install-jslibs.sh
index 4397f8f..07eb11e 100755
--- a/install-jslibs.sh
+++ b/install-jslibs.sh
@@ -13,6 +13,8 @@ test -d jquery-ui || {
 	mv jquery-ui-1.11.4 jquery-ui
 	rm -f jquery-ui-1.11.4.zip
 	}
+test -e jquery.ui.touch-punch.min.js ||
+	wget -c https://raw.githubusercontent.com/furf/jquery-ui-touch-punch/master/jquery.ui.touch-punch.min.js
 test -e lodash.min.js ||
 	wget -c https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js
 test -e backbone-min.js ||
diff --git a/vendor/jquery.ui.touch-punch.min.js b/vendor/jquery.ui.touch-punch.min.js
new file mode 100644
index 0000000..31272ce
--- /dev/null
+++ b/vendor/jquery.ui.touch-punch.min.js
@@ -0,0 +1,11 @@
+/*!
+ * jQuery UI Touch Punch 0.2.3
+ *
+ * Copyright 2011–2014, Dave Furfero
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ *
+ * Depends:
+ *  jquery.ui.widget.js
+ *  jquery.ui.mouse.js
+ */
+!function(a){function f(a,b){if(!(a.originalEvent.touches.length>1)){a.preventDefault();var c=a.originalEvent.changedTouches[0],d=document.createEvent("MouseEvents");d.initMouseEvent(b,!0,!0,window,1,c.screenX,c.screenY,c.clientX,c.clientY,!1,!1,!1,!1,0,null),a.target.dispatchEvent(d)}}if(a.support.touch="ontouchend"in document,a.support.touch){var e,b=a.ui.mouse.prototype,c=b._mouseInit,d=b._mouseDestroy;b._touchStart=function(a){var b=this;!e&&b._mouseCapture(a.originalEvent.changedTouches[0])&&(e=!0,b._touchMoved=!1,f(a,"mouseover"),f(a,"mousemove"),f(a,"mousedown"))},b._touchMove=function(a){e&&(this._touchMoved=!0,f(a,"mousemove"))},b._touchEnd=function(a){e&&(f(a,"mouseup"),f(a,"mouseout"),this._touchMoved||f(a,"click"),e=!1)},b._mouseInit=function(){var b=this;b.element.bind({touchstart:a.proxy(b,"_touchStart"),touchmove:a.proxy(b,"_touchMove"),touchend:a.proxy(b,"_touchEnd")}),c.call(b)},b._mouseDestroy=function(){var b=this;b.element.unbind({touchstart:a.proxy(b,"_touchStart"),touchmove:a.proxy(b,"_touchMove"),touchend:a.proxy(b,"_touchEnd")}),d.call(b)}}}(jQuery);
\ No newline at end of file