var cssText = "body{display:none !important;}";
var style = document.createElement('style');
style.type = "text/css";
style.id = "antiClickjack";

try {
    style.innerHTML = cssText;
} catch (e) {
    style.styleSheet.cssText = cssText;
}

document.getElementsByTagName('head')[0].appendChild(style);

if (self === top) {
    var antiClickjack = document.getElementById("antiClickjack");
    antiClickjack.parentNode.removeChild(antiClickjack);
} else {
    top.location = self.location;
}