+ * source: array An optional array of JavaScript-Objects, that
+ * define prefixes and suffixes, that should be
+ * added to source-tag defined in OA_source. Each
+ * object can (should) specify the properties "min"
+ * and "max". OA_source will only be altered, when
+ * min <= page-width <= max is true. If this is the
+ * case, the property "prefix" will be prepended to
+ * OA_source and the property "suffix" will be
+ * appended.