Zooming a Finder Window (Clicking Button)

Question

I am trying to zoom a window in the Finder but I can't make this script work. Basically I have a folder that I open up and I want to resize the window to fit the contents (just like hitting the Green button on a window in the Finder).
I get an error saying: "System Events got an error: NSReceiverEvaluationScriptError: 4".
Here is my script so far:
+tell application "System Events"+
+tell process "Finder"+
+tell window 1+
+click button 2+
+end tell+
+end tell+
+end tell+
Can anyone see just what I am missing?
Am I going about this the wrong way? Been spending hours Googling for an answer to something that seems so simple.

Answer 1

Windows are numbered in the order that they are layered, with number 1 being the frontmost, 2 being the next one back, etc. When you click on an item in column view, you get a new column, not a new window. I am guessing that you have the Finder preference set to open folders in a new window, in which case double-clicking on a folder will open it in a new window. In that case the new (front) window will be number 1, and the previous front window will be number 2, although both will have the same name, which may be where the confusion is coming from. The name of a Finder window (whatever the number) is the currently selected folder, or in the case of files or multiple selections, the containing folder, so there can be several windows with the same name if they are targeted at the same folder.