diff --git a/js/common.js b/js/common.js
index fba45b2..ca4235a 100644
--- a/js/common.js
+++ b/js/common.js
@@ -20,6 +20,21 @@ function MHUtils() {
 	return true;
 }
 
+/**
+ * Convert an array to an object with properties of the array each having empty values, for use in "in" statements.
+ * @alias				MHUtils.objConvert(arr)
+ * @param	{Array}		arr	The array to be converted
+ * @return	{Object}		Returns the object
+ * @method
+ */
+MHUtils.prototype.objConvert = function (arr) {
+	var obj = {};
+	for (var i = 0; i < arr.length; i++) {
+		obj[arr[i]]='';
+	}
+	return obj;
+};
+
 /**
  * Escape special RegExp characters.
  * @alias				MHUtils.regexEscape(str)