What does "Error: 'document.layers.main is null or not an object" indicate?

[manjugi]

Hi,
I am running som web application at some point i have one web page contains
some buttons,text field etc.when i click on button it gives an error message stating that "error: 'document.layer s.main is null or not an object" what i want is what this error message indicates.

[r035198x]

Hi,
I am running som web application at some point i have one web page contains
some buttons,text field etc.when i click on button it gives an error message stating that "error: 'document.layer s.main is null or not an object" what i want is what this error message indicates.

There's an error in the Javascript that's getting called when that button is clicked.

Moved to Javascript forum.

[RBPierce]

You have a reference to an object ("main") which doesn't exist.

[acoder]

Changed the thread title. Please use a good thread title.

[manjugi]

There's an error in the Javascript that's getting called when that button is clicked.

Moved to Javascript forum.

Thak you for your kind replay,
But still that problem is not clear for me because i am new to javascript and JSP
I give some more information that may help you to understand error more clear.Along with the error it giving some other lines such as
Line:612
char:3
code:0
url:
what exactly these lines indicating.
Thank you