Clean window

clean.js

/**
 * Written by Jonathan Bolster
 * Blog Post: http://bolsterweb.com/2011/10/how-clean-is-your-window-object/
 */
(function(window){
    var keys = {},
    cleanWindow,
    iframe = document.createElement("iframe");

    iframe.style.display ="none";
    iframe = document.body.appendChild(iframe);

    cleanWindow = iframe.contentWindow;
    document.body.removeChild(iframe);

    for(var keyName in window){
	    keys[keyName] = window[keyName];
    }

    for(var keyName in cleanWindow) {
	    delete keys[keyName]
    }

    return keys;
}(window))