javascript error window.top.mainframe is null or not an object

[Erik-Jan Bakker]

Hi

I am not a javascript expert and I have a problem that the guru's
in this newsgroup probably can solve quickly. ;-)

I've made a webpage with three frames: top, left and mainframe.
I defined this in a frameset called index.htm.
Each frame is loaded with a specific page: top:title.htm, left:menu.htm
and mainframe:start.htm.
So far so good...

In menu.htm I have a javascript compiled menubar. Each menu button
reffering to a page to load in the mainframe.
When I tested my webpage on my own PC (I start with index.htm) everything
works fine.
When I upload the webpage to my host provider and approach the index.htm
the page is loaded correctly and the javascript menu buttons appears correctly.
But when I click on one of the menu button I got the message Error in Page:

"window.top.mainframe is null or not an object"

It looks like that the frameset definition is loaded after the javascript.
But I alreasdy put the javascript at the end of the source code of menu.htm
on purpose.

How can I solve this problem?
Why don't I have this problem on my own PC?
How can I force that the object mainframe is defined in the javascript source?

I hope there's someone here to help me out with some hints, tips or tricks.

Erik-Jan

[Lasse Reichstein Nielsen]

eb*****@erik-jan.net (Erik-Jan Bakker) writes:

When I upload the webpage to my host provider and approach the
index.htm the page is loaded correctly and the javascript menu
buttons appears correctly. But when I click on one of the menu button I got the message Error in Page:

"window.top.mainframe is null or not an object"
Which provider do you use? Do you have a redirection service?

Some free web providers put frames around your pages, and some
redirectors are simply one big frame with your page inside it.
In both cases, "top" will not refer to your frameset, but to theirs.

Directing my browser to "erik-jan.net" shows a single redirection
frame pointing to "internl.net/users/ejbakker" (which doesn't exist).

Try changing the offending line from "window.top.mainframe" to
"parent.frames['mainframe']" (I prefer to use the explicit name
for the frames collection, but "parent.mainframe" probably works
too in most browsers).
It looks like that the frameset definition is loaded after the javascript.

Impossible, if the frame running the javascript is in a frame inside
the frameset.

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'

[Erik-Jan Bakker]

Lasse thnaks for your reply.
My provider is zonnet.nl but it isn't a free one.
Indeed I am using a redirection service (zoneedit.com).
As far as I know, they don't use one big frame with my page in it.
It's simply a name record in DNS.

By the way "erik-jan.net" doesn't exist anymore. is an old redirection
which I forgot to delete.
My problem is with another domain name (www.laurenskamerkoor.net)
It's temporary offline now.

I have made my menu with AllWebMenus Pro
When I look in the source I cannot find the line window.top.mainframe
so I don't know where to change it in parent.frames['mainframe']"

This is the source code:

//----------DHTML Menu Created using AllWebMenus PRO ver
3.1-#500---------------
var awmMenuName='lkkmenu';
var awmLibraryPath='/awmData-lkkmenu';
var awmImagesPath='/awmData-lkkmenu';
var awmSupported=(navigator.appName +
navigator.appVersion.substring(0,1)=="Netscape5" || document.all ||
document.layers || navigator.userAgent.indexOf('Opera')>-1)?1:0;
if (awmAltUrl!='' && !awmSupported)
window.location.replace(awmAltUrl);
if (awmSupported){
var awmMenuPath;
if (document.all) mpi=document.all['awmMenuPathImg-lkkmenu'].src;
if (document.layers)
mpi=document.images['awmMenuPathImg-lkkmenu'].src;
if (navigator.appName +
navigator.appVersion.substring(0,1)=="Netscape5" ||
navigator.userAgent.indexOf('Opera')>-1)
mpi=document.getElementById('awmMenuPathImg-lkkmenu').src;
awmMenuPath=mpi.substring(0,mpi.length-16);
var nua=navigator.userAgent,scriptNo=(nua.indexOf('Gec ko')>-1)?2:((document.layers)?3:((nua.indexOf('Opera')>-1)?4:((nua.indexOf('Mac')>-1)?5:1)));
document.write("<SCRIPT
SRC='"+awmMenuPath+awmLibraryPath+"/awmlib"+scriptNo+".js'><\/SCRIPT>");
var n=null;
awmzindex=1000;
}

var awmSubmenusFrame='mainframe';
var awmSubmenusFrameOffset;
var awmOptimize=0;
function awmBuildMenu(){
if (awmSupported){
awmImagesColl=['lkk-sub.gif',10,10,'lkk-sub2.gif',10,10];
awmCreateCSS(1,2,1,'#B6DFF5','#000F82',n,'bold 14px
Arial',n,'none',1,n,2,0)
awmCreateCSS(0,1,0,n,'#000F82',n,n,n,'outset',2,'# C0C0C0',0,0);
awmCreateCSS(1,2,1,'#000F82','#B6DFF5',n,'bold 14px
Arial',n,'none',1,n,2,1)
awmCreateCSS(0,2,1,'#B6DFF5','#000F82',n,'bold 14px
Arial',n,'none',1,n,2,1)
awmCreateCSS(0,2,1,'#FFFFFF','#7A96DF',n,'bold 14px
Arial',n,'none',1,n,2,1)
awmCreateCSS(1,2,1,'#000F82','#B6DFF5',n,'bold 14px
Arial',n,'none',1,n,2,0)
awmCreateCSS(0,2,1,'#B6DFF5','#000F82',n,'bold 14px
Arial',n,'none',1,n,2,0)
awmCreateCSS(0,2,1,'#FFFFFF','#7A96DF',n,'bold 14px
Arial',n,'none',1,n,2,0)
var s0=awmCreateMenu(0,0,0,6,1,0,0,5,0,1,23,0,0,1,0,"& nbsp&nbsp
Laurens Kamerkoor &nbsp","",n,1,1,1,0,n,n);
it=s0.addItem(2,3,4,"Inleiding",n,n,"","",n,n,n,"i nleiding.htm","mainframe");
it=s0.addItem(2,3,4,"Koorleden",n,n,"","",n,n,n,"k oorleden.htm","mainframe");
it=s0.addItem(2,3,4,"Repertoire",n,n,"","",n,n,n," repertoire.htm","mainframe");
it=s0.addItemWithImages(5,6,7,"Nieuws",n,n,"",n,n, n,0,0,0,0,1,n,"",n,n,n,n,n);
it=s0.addItem(2,3,4,"Links",n,n,"","",n,n,n,"links .htm","mainframe");
it=s0.addItem(2,3,4,"Gastenboek",n,n,"","",n,n,n," gastenboek.htm","mainframe");
it=s0.addItem(2,3,4,"Contact",n,n,"","",n,n,n,"con tact.htm","mainframe");
it=s0.addItem(2,3,4,"Inloggen",n,n,"","",n,n,n,"in loggen.htm","mainframe");
s0.pm.buildMenu();
}}
Lasse Reichstein Nielsen <lr*@hotpop.com> wrote in message news:<k7**********@hotpop.com>...

eb*****@erik-jan.net (Erik-Jan Bakker) writes:

When I upload the webpage to my host provider and approach the
index.htm the page is loaded correctly and the javascript menu
buttons appears correctly.

But when I click on one of the menu button I got the message Error in Page:

"window.top.mainframe is null or not an object"

Which provider do you use? Do you have a redirection service?

Some free web providers put frames around your pages, and some
redirectors are simply one big frame with your page inside it.
In both cases, "top" will not refer to your frameset, but to theirs.

Directing my browser to "erik-jan.net" shows a single redirection
frame pointing to "internl.net/users/ejbakker" (which doesn't exist).

Try changing the offending line from "window.top.mainframe" to
"parent.frames['mainframe']" (I prefer to use the explicit name
for the frames collection, but "parent.mainframe" probably works
too in most browsers).

It looks like that the frameset definition is loaded after the javascript.

Impossible, if the frame running the javascript is in a frame inside
the frameset.

/L

[Lasse Reichstein Nielsen]

eb*****@erik-jan.net (Erik-Jan Bakker) writes:

My problem is with another domain name (www.laurenskamerkoor.net)
It's temporary offline now. I have made my menu with AllWebMenus Pro
When I look in the source I cannot find the line window.top.mainframe
so I don't know where to change it in parent.frames['mainframe']"
It is probably on one of the browser dependent files. If you use IE,
the file is "awmlib1.js". There are files from 1 to 5, number 2 is
Gecko, 3 is Netscape 4, 4 is Opera and 5 is something else on a
Macintosh (IE or Safari, although it probably assumes it is IE because
it doesn't know Safari).

The file is loaded here:
var nua=navigator.userAgent,scriptNo=(nua.indexOf('Gec ko')>-1)?2:((document.layers)?3:((nua.indexOf('Opera')>-1)?4:((nua.indexOf('Mac')>-1)?5:1)));
document.write("<SCRIPT
SRC='"+awmMenuPath+awmLibraryPath+"/awmlib"+scriptNo+".js'><\/SCRIPT>");
The 'mainframe' comes from the menu data itself. E.g.:
it=s0.addItem(2,3,4,"Inleiding",n,n,"","",n,n,n,"i nleiding.htm","mainframe");

Last argument is probably the frame.

The means that you should search for "window.top" in the browser
dependent files.

Or, more probable, you can read the documentation for AllWebMenus and
see where you set the frame path to the target frame.

/L
--
Lasse Reichstein Nielsen - lr*@hotpop.com
Art D'HTML: <URL:http://www.infimum.dk/HTML/randomArtSplit.html>
'Faith without judgement merely degrades the spirit divine.'

[Erik-Jan Bakker]

Lasse, thanks!

My problem is solved. It was indeed one of the browser dependent files.
I've repalced in all files awmlibx.js (1 to 7) window.top with parent.
Now it works fine!

But I still don't understand why I didn't have a problem on my own PC?
Lasse Reichstein Nielsen <lr*@hotpop.com> wrote in message news:<u1**********@hotpop.com>...

It is probably on one of the browser dependent files. If you use IE,
the file is "awmlib1.js". There are files from 1 to 5, number 2 is
Gecko, 3 is Netscape 4, 4 is Opera and 5 is something else on a
Macintosh (IE or Safari, although it probably assumes it is IE because
it doesn't know Safari).

The file is loaded here:

var nua=navigator.userAgent,scriptNo=(nua.indexOf('Gec ko')>-1)?2:((document.layers)?3:((nua.indexOf('Opera')>-1)?4:((nua.indexOf('Mac')>-1)?5:1)));
document.write("<SCRIPT
SRC='"+awmMenuPath+awmLibraryPath+"/awmlib"+scriptNo+".js'><\/SCRIPT>");

The 'mainframe' comes from the menu data itself. E.g.:

it=s0.addItem(2,3,4,"Inleiding",n,n,"","",n,n,n,"i nleiding.htm","mainframe");

Last argument is probably the frame.

The means that you should search for "window.top" in the browser
dependent files.

Or, more probable, you can read the documentation for AllWebMenus and
see where you set the frame path to the target frame.

/L