HTML_TEMPLATE_FLEXY_ERROR_DIE = 8
HTML_TEMPLATE_FLEXY_ERROR_FILE = -2
HTML_TEMPLATE_FLEXY_ERROR_INVALIDARGS = -2
HTML_TEMPLATE_FLEXY_ERROR_RETURN = 1
HTML_TEMPLATE_FLEXY_ERROR_SYNTAX = -1
void HTML_Template_Flexy_is_a( $obj, $class)