login using session in php

[IamCool]

\[code\]<?phpob_start();include("db_connect.php");$tbl_name='login';$myusername=$_POST['myusername'];$mypassword=$_POST['mypassword'];// To protect MySQL injection (more detail about MySQL injection)$myusername = stripslashes($myusername);$mypassword = stripslashes($mypassword); $myusername = mysql_real_escape_string($myusername);$mypassword = mysql_real_escape_string($mypassword);$encrypted_mypassword = crypt($mypassword,'ctk'); $sql="SELECT * FROM $tbl_name WHERE u_name='$myusername' and password='$encrypted_mypassword'";$result=mysql_query($sql);// Mysql_num_row is counting table row$count=mysql_num_rows($result);// If result matched $myusername and $mypassword, table row must be 1 rowif($count==1){session_register("myusername");session_register("encrypted_mypassword");header("location:edit-grid.php");}else {header("location:main_login.php?a=Login Failed Try Again!!");//echo "Wrong Username or Password";}ob_end_flush();?>\[/code\]i have a login page shown above, in localhost it works fine,but shows an error in firebug:Failed to load source for: http://localhost/emp_tracker/main/checklogin.phpIn server that is when it is hosted it does not re-direct it fails(session fails),