Module development and code questions

Using drupal 4.2.0, image.module 4.2.0

When clicking on the 'Read More' or 'Add Comment' links for an image node, I am presented with this error:

I've installed the current event module on my site and I'm having problems with the way it pulls events and places them on the calendar. Here's an example...

http://er7600.com/event/2003/08

The event "Afterburn" that is displayed as taking place on the 1st of August is scheduled to be on the 1st of September. I've checked the node and there's nothing wrong with it as far as I can tell.

What's the best way to write a guestbook.module? (Like a real guestbook with nice links) Not a static page where people can add comments, now but a nice little static texts whith some links under it that say "read the guestbook" and "sign the guestbook"

The random thumbnails weren't working for me -- sometimes I wouldnit get a thumbnail for an album on the gallery page.

When I looked at the code, the query didn't seem to make sense...

A patch follows, although it uses the mysql specific LIMIT clause -- Postgres has something similar, but what is the prefered way of handling this type of thing?

J

--- image/image.module	2003-08-18 12:03:14.000000000 -0700
+++ image2/image.module	2003-08-18 12:08:21.000000000 -0700
@@ -1229,10 +1229,10 @@
     $albums[$term_id]->thumb = $last_update->thumb_path;
 
     if (variable_get("image_gallery_thumb", "last") == "random") {
-      $nodes = db_fetch_object(db_query("SELECT MIN(nid) as min, MAX(nid) as max FROM {node} WHERE type = 'image'"));
-      $id = rand($nodes->min, $nodes->max);
-      $random = db_fetch_object(db_query("SELECT i.thumb_path FROM {node} n INNER JOIN {image} i ON  n.nid = i.nid INNER JOIN {term_node} t ON n.nid = t.nid WHERE t.tid IN (". implode(",", $terms) .") AND n.type = 'image' AND i.personal = 0 AND n.nid >= ". $id ." LIMIT 1"));
-      $albums[$term_id]->thumb = $random->thumb_path;
+      $id = rand (0, ($albums[$term_id]->image_count - 1));
+      $result = db_query ("SELECT i.thumb_path FROM {term_node} tn INNER JOIN {image} i ON tn.nid = i.nid WHERE tn.tid = ". $term_id ." LIMIT " . $id . ", 1" );

Are there existing module development guidelines?

One of the things I would like to see in particular are some guidelines around content display/generation. So, no hard-coded styles, no hard-coded attributes like position etc.

Ideally, all content should be semantically tagged so that CSS styles can be applied for styling. Each module should ship with a default CSS file, which can then be modified or integrated into the main stylesheet.

Hi!
I wanted to know, how to change the link for the user (author) name in the node title bar.
The idea is, not to display the user informations when clicking on it, but to make a user-email"
Where can I change that, or how can I get the variable for the user-email?