PHP help

I followed this tutorial and it worked pretty well at first, untill I decided to add more input catagories and a drop down menu. I undid what i changed before it stopped working and it still won’t work. The weird part is though that it works in Firefox.

This is my code:
PHP

 <?php 
if(isset($_POST['submit'])) { 
$to = "razergames@gmail.com"; 
$subject = "New Review"; 
$name_field = $_POST['name']; 
$email_field = $_POST['email'];
$game_field = $_POST['game_name'];
$genre_field = $_POST['genre'];
$console_field = $_POST['console'];
$review = $_POST['review']; 
 
$body = "From: $name_field
 E-Mail: $email_field
 Game: $game_field
 Genre: $genre_field
 Console: $console_field
 review:
 $review"; 
 
echo "E-mail sent to $to!. please press backspace to return to the review page."; 
mail($to, $subject, $body); 
} else { 
echo "blarg!"; 
} 
?> 

HTML

<font face="arial" color="white">
<form method="POST" action="mailer.php">
Name:<br>
<input type="text" name="name" size="20"><br><br>
E-mail adress:<br>
<input type="text" name="email" size="20"><br>
<br>
Game name:<br>
<input type="text" name="game_name" size="20"><br>
<br>
Genre:<br>
<input type="text" name="genre" size="20"><br><br>
Platform:<br>
<input type="text" name="console" size="20"><br><br>
Submit Review here:<br>
<textarea rows="9" name="review" cols="60"></textarea>
<br>
<br>
<center><input type="image" src="images/submit.gif" value="submit" name="submit"></center>
</form></font>

The example of it not working can be found here. thanks for any help you can give me.