GO to next page after LOGIN

<?php

if(isset($_POST['name_of_login_button']))
{
$A = mysql_connect("LocalHost","root","") or die("Error in MYSQL Connection");
mysql_select_db("name_of_database",$A) or die("Error in Data Base");
$NM = $_POST['name_of_first_textfield']; // that may be 'txtName'
                 $PD = $_POST['name_of_second_textfield']; // that may be 'txtPwd'
$query = mysql_query("SELECT * FROM name_of_table where column_name_for_Name='".$NM."' AND column_name_for_Passward='".$PD."'", $A) or die("Error in Select Query");
$row = mysql_fetch_array($query);
if($row["column_name_for_Name"]==$NM && $row["column_name_for_Passward"]==$PD)
{
echo "<script> window.location.assign('name_of_page.php'); </script>";
}
else
{
echo"Your password is wrong";
}
mysql_close($A);
}
?>