How to create a naked Object in old Browsers (eg. IE 6,7,8) which not support Object.create(null) or {__proto__: null}

gistfile1.js

function nakedObject() {  
    var iframe = document.createElement('iframe')  
    iframe.width = iframe.height = 0  
    iframe.style.display = 'none'  
    document.appendChild(iframe)  
    iframe.src = 'javascript:'  
    var proto = iframe.contentWindow.Object.prototype  
    iframe.parentNode.removeChild(iframe)  
    iframe = null  
      
    var props = [  
        'constructor', 'hasOwnProperty', 'propertyIsEnumerable',  
        'isPrototypeOf', 'toLocaleString', 'toString', 'valueOf'   
    ]  
    for (var i = 0; i < props.length; i++) {  
        delete proto[props[i]]  
    }  
    return proto  
}