Php & Internet Explorer 2, Part Two

[Jetteh22]

Like I said in my other one.. This code works great on Firefox and Chrome but not IE. Can't figure out why. It's supposed to verify the file is a gif,jpg or png and then upload it if it IS and give an error if it's not. If you'll notice, there are two ways it can fail and the error the user gets (only in IE) is "Avatars must be .jpg, .gif or .png formats!" even if it IS. It won't let you upload anything. I tried JPG, PNG, GIF, etc.

CODE

<?php
session_start();
include 'g_includes.php';

if (($_FILES["avatarfile"]["type"] == "image/gif")
  || ($_FILES["avatarfile"]["type"] == "image/jpeg")
  || ($_FILES["avatarfile"]["type"] == "image/png" ))
{

$targetpath = "useravatars/";

$targetpath = $targetpath . $g_userid . ".jpg"; //Yes, I know I am adding a .jpg to the end of it no matter what but this wouldn't be the problem.

if(move_uploaded_file($_FILES['avatarfile']['tmp_name'], $targetpath)) {

$sql = "UPDATE users SET avatar='$targetpath' WHERE id='$g_userid'";
mysql_query($sql) or die("Couldn't upload!");

$message = "Your new avatar has been uploaded! You might have to refresh the page to see it.";
$sql = "INSERT INTO news(userid,message) VALUES('$g_userid','$message')";
mysql_query($sql) or die("Couldn't insert message!");

}
else{
$message = "Unable to upload the file. ";
$sql = "INSERT INTO news(priority,userid,message) VALUES(2,'$g_userid','$message')";
mysql_query($sql) or die("Couldn't insert message!");

}
}
else{
$message = "Avatars must be .jpg, .gif or .png formats!";
$sql = "INSERT INTO news(priority,userid,message) VALUES(2,'$g_userid','$message')";
mysql_query($sql) or die("Couldn't insert message!");
}
?>

<script type="text/javascript">
// <!--
window.location = "g_account.php"
//-->
</script>