'Checks to make sure \'patt\' is NOT in the page.'

def check_string_not_in_page(self, patt):

    page = self.last_page()
    if (page.find(patt) != (-1)):
        fname = self.write_temp_file(page)
        errmsg = ("string    (%s)    incorrectly    displayed    in    page.\npage    content    written    to    '%s'" % (patt, fname))
        raise AssertionError(errmsg)
