Can anyone tell me why I keep getting a plain white screen after submitting my form? Here's the code (some of them are generated by dreamweaver and I don't think I have enough time to learn how to do it manually because I need this running in a few hours)

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "formform")) {
	
//already reserved--------------------------------------------------------
$query=sprintf("SELECT * FROM tblsetting");
$settings = mysql_query($query);
while($row=mysql_fetch_array($settings)){
	$maxdays = $row['MaxBooks'];
	$fmaxbooks = $row['fMaxBooks'];
}
////check currently borrowed books----------------------------------------
$Status="pending";
mysql_connect("localhost", "root","");
mysql_select_db("dblib"); 
$result2=sprintf("SELECT * FROM tblbook_borrow WHERE BorrowerID=%s AND Status=%s",
    GetSQLValueString($_SESSION['MM_Username'], "text"), GetSQLValueString($Status, "text"));
$result1 = mysql_query($result2);
$totalRows_result1 = mysql_num_rows($result1) or die(mysql_error());
while($row= mysql_fetch_array($result1)){
	if ($totalRows_result1 = $maxdays){
		die("You've reached the maximum amount of books per person. <br /> Unable to reserve selected book.");
	}
}
////check current reservations--------------------------------------------
$Status="Pending";
//mysql_connect("localhost", "root","");
//mysql_select_db("dblib"); 
$result2=sprintf("SELECT * FROM tblreservation WHERE rStudentNo=%s AND rStatus=%s",
    GetSQLValueString($_SESSION['MM_Username'], "text"), GetSQLValueString($Status, "text"));
$result1 = mysql_query($result2);
$totalRows_result1 = mysql_num_rows($result1) or die(mysql_error());
	if ($totalRows_result1 = 1){
		die("You've reached the maximum amount of books reserved per person. <br /> Unable to reserve selected book.");
	}
////check remaining copies------------------------------------------------
$Status = "Available";
mysql_connect("localhost", "root","");
mysql_select_db("dblib"); 
$result2=sprintf("SELECT * FROM tblaccession WHERE aAN=%s",
    GetSQLValueString($_POST['txtAN'], "text"));
$result1 = mysql_query($result2);
while($row= mysql_fetch_array($result1)){
	$CallNo = $result1['aCN'];
}

$result2=sprintf("SELECT * FROM tblaccession WHERE aCN=%s AND aStatus=%s",
    GetSQLValueString($CallNo, "text"), GetSQLValueString($Status, "text"));
$result1 = mysql_query($result2);
$totalRows_result1 = mysql_num_rows($result1) or die(mysql_error());
if ($totalRows_result1 <= 1){
	die("There is only one available copy left of this book. Unable to reserve selected book.");
}
////check date------------------------------------------------------------
$dayz = "Sunday";
$date =  $_POST['hiddenField'] ;
$weekday = date('l', strtotime($date));
if($weekday=="Sunday"){
die("You cannot reserve a book on Sunday.");
}
////check holiday---------------------------------------------------------
do{
$searchdate = $row_Recordset3['hMonth'] . "/" . $row_Recordset3['hDay'];
$datenow = date("m/d/Y");
  $pos = strrpos($datenow, $searchdate);
if ($pos === false) { 
}
else {
die("You cannot reserve on a holiday");
}
} while ($row_Recordset3 = mysql_fetch_assoc($Recordset3)); 
//--------------------------------------------------------already reserved
	
	
	
	$dates = date("m/d/y");
$times = "HH:MM";
$status = "Pending";
  $insertSQL = sprintf("INSERT INTO tblreserve (bCN, rStudentNo, rDate, rTime, rStatus) VALUES (%s, %s, %s, %s, %s)",
                       GetSQLValueString($_POST['txtAN'], "text"),
                       GetSQLValueString($_POST['txtSN'], "text"),
                       GetSQLValueString($_POST['hiddenField'], "text"),
                       GetSQLValueString($times, "text"),
                       GetSQLValueString($status, "text"));
  $txtANS = $_POST['txtAN'];
  $updatequery="update tblaccession set aStatus='Pending' where aAN='$txtANS'";

mysql_select_db($database_mysqlcon, $mysqlcon);
  $Result1 = mysql_query($insertSQL, $mysqlcon) or die(mysql_error());
  $Result2 = mysql_query($updatequery, $mysqlcon) or die(mysql_error());
  $insertGoTo = "step4.php";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));
}

did you read your error.log? does it say something?
try to debug your script step by step

did you read your error.log? does it say something?
try to debug your script step by step

Sorry it took a while, I tried to start from scratch but it still goes white.. Here's what the error log says

[Fri Oct 21 21:10:21 2011] [error] [client 127.0.0.1] PHP Notice:  Undefined property: MySqlConnection::$password in F:\\xamppxxxxxxxxxxxx\\htdocs\\_mmServerScripts\\mysql.php on line 101
[Fri Oct 21 21:10:21 2011] [error] [client 127.0.0.1] PHP Notice:  Undefined property: MySqlConnection::$password in F:\\xamppxxxxxxxxxxxx\\htdocs\\_mmServerScripts\\mysql.php on line 101
[Fri Oct 21 21:11:59 2011] [error] [client 127.0.0.1] PHP Notice:  Undefined property: MySqlConnection::$password in F:\\xamppxxxxxxxxxxxx\\htdocs\\_mmServerScripts\\mysql.php on line 101
[Fri Oct 21 21:11:59 2011] [error] [client 127.0.0.1] PHP Notice:  Undefined property: MySqlConnection::$password in F:\\xamppxxxxxxxxxxxx\\htdocs\\_mmServerScripts\\mysql.php on line 101

Does dreamweaver CS4 have breakpoints? D:
I've been going over and over the script and I still can't find out why it goes white :/

Make sure error reporting is on. You appear to do a query before the connect, perhaps that causes it.

Make sure error reporting is on. You appear to do a query before the connect, perhaps that causes it.

I tried commenting the other ones after starting over and I apparently do have an error in my sql statement. Just wish php told me instead of putting on a white screen XD

$query = 'SELECT * FROM table WHERE x'; // error of course
$result = mysql_query($query) or die(mysql_error()); // die on mysql error
if ($result)
{
  $row = mysql_fetch_array($result);
  // process
}
else
{
  echo 'No results'; // will get here only if the die() is missing.
}
mysql_free_result($result);

Turn error reporting on in the INI file, or use the error_reporting() function at the top of your script.