Why is this basic javascript not working??

Hi.

I'm trying to do a form which posts to a page called "post.php" which includes a mail send function and then a redirect to the previous page, with an alert claiming the form submit was successful. The code for my redirect (embedded in the php page) is as follows:

$str="<script language=\"javascript\">";	
$str.="document.location.href='http://www.myurl.com?alert=1';";
$str.="</script>";
return $str;

PHP:

but for some reason, it just doesn't work. I tried window.location and also window.location.href but as far as I know they should all work. Am I missing something here?

Thank you.

 

Solved! It was actually a missing semi-colon in a previous function.