How to swap two objects?

In addition to Naty's answer, the "swap objects" script by Wundes also swaps the dimensions of the objects. I made a similar script which just swaps the position regardless of the dimensions.

The script swaps 2 objects based on the objects center x & y.

Here you go:

try { 
    var selObjs = "Please select two objects on the page.";
    var docRef = activeDocument;
    if (documents.length>0) {
        if (docRef.selection.length == 2) {
            mySelection = docRef.selection;

            //if object is a (collection of) object(s) not a text field.
            if (mySelection instanceof Array) {
                //initialize vars
                var object_A = mySelection[0];
                var object_B = mySelection[1];

                // Calculate new center object A
                new_A = [
                    (object_B.left+(object_B.width/2))-object_A.width/2,
                    (object_B.top-(object_B.height/2))+object_A.height/2
                ];
                // Calculate new center object B
                new_B = [
                    (object_A.left+(object_A.width/2))-object_B.width/2,
                    (object_A.top-(object_A.height/2))+object_B.height/2
                ];
                // Make the swap
                object_A.position = new_A;
                object_B.position = new_B;

            } else {
                alert(mySelection+" is not an array!\n"+selObjs);
            }
        } else {
            alert("Selection is not 2 objects!\n"+selObjs);
        }
    }
} catch(e){
    alert("problem:\n"+e);
}