```javascript
if (self === top) {
// The page is not in an iframe
document.body.style.display = "block";
} else {
// The page is in an iframe
top.location = self.location;
}
```
```javascript
if (self === top) {
// The page is not in an iframe
document.body.style.display = "block";
} else {
// The page is in an iframe
top.location = self.location;
}
```
