add front-part of autocompleter function

searx/static/js/searx.js

@@ -1,3 +1,20 @@
+window.addEvent('domready', function() {
+	new Autocompleter.Request.JSON('q', '/', {
+		postVar:'q',
+		postData:{
+			'autocompleter': 1,
+			'format': 'json'
+		},
+		ajaxOptions:{
+		    timeout: 5   // Correct option?
+		},
+		'minLength': 4,
+		'selectMode': 'type-ahead',
+		cache: true,
+		delay: 300
+	});
+});
+
 (function (w, d) {
     'use strict';
     function addListener(el, type, fn) {