Required library edition:
Required library file: dhtmlxwindows.js

attaches an event handler

• original - event's original name;
• catcher - event handler;
• CallObj - object that will call the event.

Several handlers can be attached to one and the same event, and all of them will be executed.

Note: the names of the events are case-insensitive.

    dhxWins.attachEvent("onClose", function(win){
        // code here
    });