use fixed style by default

Sources/Load.php

@@ -727,6 +727,7 @@ function loadTheme($ID_THEME = 0, $initialize = true)
 
 	$settings = $themeData[0];
 	$options = $themeData[$member];
+	if (! isset($options['style_width'])) $options['style_width'] = 'fixed';
 
 	//HACK: update DB if cookie has different seting
 	if (isset ($_COOKIE['style_width']) AND