You were correct  . This is 100% a browser issue , Thanks for your assistance.

struct FILETYPE {
   char ext[32];
   char type[80];
} filetype[] = {
        {".AI",   "application/postscript"},
        {".ASC",  "text/plain"},
        {".BZ2",  "application/x-bzip2"},
        {".CFG",  "text/plain"},
        {".CHRT", "application/x-kchart"},
        {".CONF", "text/plain"},
        {".CSH",  "application/x-csh"},
        {".CSS",  "text/css"},
        {".DOC",  "application/msword"},
        {".DVI",  "application/x-dvi"},
        {".EPS",  "application/postscript"},
        {".GIF",  "image/gif"},
        {".GZ",   "application/x-gzip"},
        {".HTM",  "text/html"},
        {".HTML", "text/html"},
        {".ICO",  "image/x-icon"},
        {".JPEG", "image/jpeg"},
        {".JPG",  "image/jpeg"},
        {".JS",   "application/x-javascript"},
        {".KPR",  "application/x-kpresenter"},
        {".KSP",  "application/x-kspread"},
        {".KWD",  "application/x-kword"},
        {".MP3",  "audio/mpeg"},
        {".OGG",  "application/x-ogg"},
        {".PDF",  "application/pdf"},
        {".PNG",  "image/png"},
        {".PS",   "application/postscript"},
        {".RAM",  "audio/x-pn-realaudio"},
        {".RM",   "audio/x-pn-realaudio"},
        {".RM",   "audio/x-pn-realaudio"},
        {".RM",   "audio/x-pn-realaudio"},
        {".RPM",  "application/x-rpm"},
        {".RTF",  "application/rtf"},
        {".SH",   "application/x-sh"},
        {".SVG",  "image/svg+xml"},
        {".TAR",  "application/x-tar"},
        {".TCL",  "application/x-tcl"},
        {".TEX",  "application/x-tex"},
        {".TGZ",  "application/x-gzip"},
        {".TIF",  "image/tiff"},
        {".TIFF", "image/tiff"},
        {".TXT",  "text/plain"},
        {".WAV",  "audio/x-wav"},
        {".XLS",  "application/x-msexcel"},
        {".XML",  "text/xml"},
        {".XSL",  "text/xml"},
        {".ZIP",  "application/x-zip-compressed"},
        /* Open XML file types */
        {".DOCM", "application/vnd.ms-word.document.macroEnabled.12"},
        {".DOCX", "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},
        {".DOTM", "application/vnd.ms-word.template.macroEnabled.12"},
        {".DOTX", "application/vnd.openxmlformats-officedocument.wordprocessingml.template"},
        {".PPSM", "application/vnd.ms-powerpoint.slideshow.macroEnabled.12"},
        {".PPSX", "application/vnd.openxmlformats-officedocument.presentationml.slideshow"},
        {".PPTM", "application/vnd.ms-powerpoint.presentation.macroEnabled.12"},
        {".PPTX", "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
        {".XLSB", "application/vnd.ms-excel.sheet.binary.macroEnabled.12"},
        {".XLSM", "application/vnd.ms-excel.sheet.macroEnabled.12"},
        {".XLSX", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},
        {".XPS",  "application/vnd.ms-xpsdocument"},
        {"",      ""},
};

Look in the manual under "conditional attributes"

Stefan

Thanks for your suggestion.. Is it possible to, once 

Thanks for your suggestion. Right now, my log is configured as follows:

Options Eyepiece = Pentax{a}, TeleVue{b}, Meade{c}
{a} Options Pentax = 5mm, 20mm, 30mm
{b} Options TeleVue = 7mm Nagler, 10mm Radian, 24mm Panoptic
{c} Options Meade = 8.8mm UWA, 14mm UWA, 26mm QX

If I select "Pentax", I would like the other two options to be unavailable. Instead, all three options are shown. Can I mask the other unused options?

Instead of using three different options you could use the same:

Options Eyepiece = Pentax{a}, TeleVue{b}, Meade{c}

{a} Options Form = 5mm, 20mm, 30mm
{b} Options Form = 7mm Nagler, 10mm Radian, 24mm Panoptic
{c} Options Form = 8.8mm UWA, 14mm UWA, 26mm QX

It makes more sense.
But it is as well possible to supress attributed in the edit from. See

• Show Attributes = <list>
  Attributes present in this list are shown in the single entry page. Omitting attributes can make sense for attributes which are automatically derived from other attributes via the Change <attribute> command.
• Show Attributes Edit = <list>
  The same as Show Attributes, but for the entry form.

You just have a different <list> for each conditional case {a} {b} {c}.

> We are using elog as a small database system, today we came across a 
> problem where 2 people were editing the same record and the first one to 
> submit his changes were overwritten when the second person submitted his.
> 
> Is there anyway to lock a logbook record when someone has pressed EDIT, 
> maybe set a flag in the logbook entry so it has to be unlocked when its 
> submitted by the originator or by an administrator.

No, but I will put it on the wishlist. Anyhow it is hard to implement 
something like this. Assume that I would lock a page whenever it's edited 
by 
someone. This person can edit it and forget to submit the changes, just 
close 
the browser. Since the elogd server does not know when a remote browser is 
closed, it cannot determine if the editing is just taking long or if the 
person closed the browser. In the latter case, the message would be locked 
forever and nobody could change it any more. If I put a timeout, like keep 
locked for N minutes, it's again not 100% safe. I saw people doing shift 
work 
with elog, opening a page, keeping it open for 8 hours and then submit it. 
So 
if I set the timeout to 8h, and someone abandons editing a message, this 
message would be blocked for 8h, which is probably also not what you want. 

Alternatively, I just can display a messge: Warning: this message is 
currently edited by user xxx on host xxx. But if the warning is ignored by 
the user, then again we have the same problem.

Do you see a clever solution to that?

> No, but I will put it on the wishlist. Anyhow it is hard to implement 
> something like this. Assume that I would lock a page whenever it's edited 
by 
> someone. This person can edit it and forget to submit the changes, just 
close 
> the browser. Since the elogd server does not know when a remote browser 
is 
> closed, it cannot determine if the editing is just taking long or if the 
> person closed the browser. In the latter case, the message would be 
locked 
> forever and nobody could change it any more. If I put a timeout, like 
keep 
> locked for N minutes, it's again not 100% safe. I saw people doing shift 
work 
> with elog, opening a page, keeping it open for 8 hours and then submit 
it. 
So 
> if I set the timeout to 8h, and someone abandons editing a message, this 
> message would be blocked for 8h, which is probably also not what you 
want. 
> 
> Alternatively, I just can display a messge: Warning: this message is 
> currently edited by user xxx on host xxx. But if the warning is ignored 
by 
> the user, then again we have the same problem.
> 
> Do you see a clever solution to that?


I was thinking of having an icon on the page that administrator can click 
to 
unlock a record that has been left locked by someone, perhaps using 
something 
like 

Allow Unlock = admin (or even just have the option on the top like 
(Admin/Config) for administrators

Just like the delete function works, in addition to the Warning message as 
you suggested

> We are using elog as a small database system, today we came across a 
> problem where 2 people were editing the same record and the first one to 
> submit his changes were overwritten when the second person submitted his.
> 
> Is there anyway to lock a logbook record when someone has pressed EDIT, 
> maybe set a flag in the logbook entry so it has to be unlocked when its 
> submitted by the originator or by an administrator.

I added some code experimentally to avoid double editing. Whenever a message 
is edited, a "stop" sign is displayed in the message list next to the edited 
messages and a warning is issued on the single message display page. If the 
original editing has been given up (browser closed) one can just ignore this 
message. I prefer this solution in comparision with a real locking, since 
the mechanisms for unlocking a stale message by the administrator is not 
necessary. Get the newest code from CVS, get also themes/default/stop.gif to 
display the stop sign, and let me know what you think.