def add_JSsource(self, new_src):
        """add additional js script source(s)"""
        if isinstance(new_src, list):
            for h in new_src:
                self.JSsource.append(h)
        elif isinstance(new_src, basestring):
            self.JSsource.append(new_src)
        else:
            raise OptionTypeError("Option: %s Not Allowed For Series Type: %s" % type(new_src))
add additional js script source(s)