How to determin that current element is window

[Irollataw]

I attach some event handler to different elements such as input, select ... and window. I need to check inside handler if current element is window or common html element. How should I make that check?Example:\[quote\] inputTextEl.attachEvent("some event", handler); inputButtonEl.attachEvent("some event", handler); window.attachEvent("some event", handler);\[/quote\]\[code\] var handler = function (eventName) { return function () { var message = '[' + eventName + ']'; if (window.event) { message += ' eventType: ' + window.event.type; var target = window.event.srcElement || window.event.target; var id = target.id; if (id == '') { id = target.parentNode.id; } message += ' ;eventTarget: ' + id; } else { message += ' window.event - undefined'; } console.log(message); }; };\[/code\]