swin/sWin?

[Tir Tinuviel]

What does "swin" or "sWin" mean?

i.e.

swin = window.open("print.htm","swin","width=300,height=400,scrollbars=yes,resizable=yes,top=" + topPos + ",left=" + leftPos);

[Purple Martin]

It is a user-defined variable that holds a value equal to the result of the expression on the right.

In JavaScript you don't have to explicitly declare variables like you do in most languages. The first time you use a new variable name, it is automatically declared. The variable type (either string or numeric) is implied by the first value assigned to the variable.

The code could have been written like this (which means exactly the same thing):
var swin = window.open.....etc

[diades]

var swin = window.open.....etc

I hope that you do not mind me pointing out that whilst are the "same" as regards being variables they are of differing scope if used within a function:

swin = window.open.....etc 
var swin = window.open.....etc 

swin is of global scope and will be available to all functions etc., as long as that page is loaded whereas var swin is of local scope to that function and only exists whilst that function is called.

[Tir Tinuviel]

ahh, cheers! :)