<p>Occasionally, I've come across a webpage that tries to pop open a new window (for user input, or something important), but the popup blocker prevents this from happening.</p>

<p>What methods can the calling window use to make sure the new window launched properly?</p>

If you use JavaScript to open the popup, you can use something like this:
```
```
var newWin = window.open(url);             

if(!newWin || newWin.closed || typeof newWin.closed=='undefined') 
{ 
    //POPUP BLOCKED
}
```
```