Encrypts an email via rot13 encryption

php: encrypt email rot13.txt

<?php
/**
 * Encrypts an email w/out mailto link via rot13 encryption
 * decrypts it via javascript
 * @param  string  $email  Email
 * @param  boolean $mailto Wrap in <a href='mailto:'></a>
 * @return string          Safe Email
 */
function safeMail($email,$mailto=true){
    $e = str_rot13($email);
	if ($mailto){
		return '<script type="text/javascript">
				document.write(\'<n uers="znvygb:'.$e.'">'.$e.'</n>\'.replace(/[a-zA-Z]/g, function(c){return String.fromCharCode((c<="Z"?90:122)>=(c=c.charCodeAt(0)+13)?c:c-26);}));
				</script>';
	}else{
		return '<script type="text/javascript">
				document.write(\''.$e.'\'.replace(/[a-zA-Z]/g, function(c){return String.fromCharCode((c<="Z"?90:122)>=(c=c.charCodeAt(0)+13)?c:c-26);}));
				</script>';
	}
}