+/**
+ * Displays error message
+ *
+ * Since 1.4.1 function checks if page header is already displayed.
+ *
+ * Since 1.4.3 and 1.5.1, this function contains the error_box hook.
+ * Use plain_error_message() and make sure that page header is created,
+ * if you want compatibility with 1.4.0 and older.
+ *
+ * In 1.5.2 second function argument is changed. Older functions used it
+ * for $color array, new function uses it for optional link data. Function
+ * will ignore color array and use standard colors instead.
+ *
+ * @param string $string Error message to be displayed
+ * @param array $link Optional array containing link details to be displayed.
+ * Array uses three keys. 'URL' key is required and should contain link URL.
+ * 'TEXT' key is optional and should contain link name. 'FRAME' key is
+ * optional and should contain link target attribute.
+ *
+ * @since 1.3.2
+ */
+function error_box($string, $link=NULL) {
+ global $pageheader_sent, $oTemplate;
+
+ $err = _("ERROR");
+ do_hook('error_box', $string);
+
+ /* check if the page header has been sent; if not, send it! */
+ if (!isset($pageheader_sent) && !$pageheader_sent) {
+ displayHtmlHeader('SquirrelMail: '.$err);
+ $pageheader_sent = TRUE;
+ echo "<body>\n\n";