parse error..db input

[Sul]

I'm getting an error:

Parse error: parse error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in ****\add.php on line 11

from the following code...I have no idea what's wrong.



if ($_POST['submit'] == "submit")
{
$query = "insert into guestbook (name, location, email, url, comments) values
($_POST['name'],$_POST['location'],$_POST['email']
,$_POST['url'],$_POST['comments'])";

mysql_query($query) or die (mysql_error());
}