var output = (function ( object ) {
    
    "use strict";
    
    function getProperties ( object ) {
        return object ? Object.getOwnPropertyNames( object )
            .concat( getProperties( Object.getPrototypeOf( object ) ) ) : [] ;
    }
    
    function getUnique ( array ) {
        return array.filter(function ( value, index ) {
            return array.lastIndexOf( value ) === index;
        });
    }
    
    return getUnique( getProperties( object ).sort() );
    
}( window ));

/* Choose how you'd like it output */
document.body.style.whiteSpace = "pre";
document.body.textContent = JSON.stringify( output, null, "\t" );