Ik heb dit script:

Code:

<?php
check_login();
error_reporting(E_ALL);

echo "<h1>Uitnodigingen</h1>";

if(isset($_GET['accept']) && isset($_GET['id'])) {
	if($_GET['accept'] == 1){
		
		//////////// CONTROLEREN OF DE GEBRUIKER DE UITNODIGING AL HEEFT BEHANDELD!!!!! ////////////////////
		$query = "SELECT * FROM uitnodiging_user WHERE website_id = ".$_GET['id']." AND user_id = ".$_SESSION['userid']."";
		$sql = mysql_query($query) or die ( mysql_error( ) );
		while($record = mysql_fetch_object($sql)){
			$fout = 1;
		}
		
		if(isset($fout)) {
			echo "U heeft deze uitnodiging al bevestigd. U wordt teruggestuurd!";			
		} else {		
			// willekeurige website ophalen
			$query = "SELECT * FROM websites WHERE id = ".$_GET['id']." AND credits_uitnodigingen >= $credits_uitnodigingen2 LIMIT 1";
			$sql = mysql_query($query) or die ( mysql_error( ) );
			while($record = mysql_fetch_object($sql)) {
				$id = $record->id;
				$url_tonen = $record->url;
			}
						
			// credits eraf halen
			$query = "UPDATE websites SET credits_uitnodigingen = credits_uitnodigingen-$credits_uitnodigingen2 WHERE id = $id";
			$sql = mysql_query($query) or die ( mysql_error( ) );
		
			//aangeven dat de gebruiker de uitnodiging heeft behandeld
			$query = "INSERT INTO uitnodiging_user (website_id , user_id) VALUES ('$id', '".$_SESSION['userid']."')";
			$sql = mysql_query($query) or die ( mysql_error( ) );
			
			// credits toevoegen
			$weging_teller = 100;
			$query = "SELECT * FROM websites WHERE userid = ".$_SESSION['userid']."";
			$sql = mysql_query($query) or die ( mysql_error( ) );
			while($record = mysql_fetch_object($sql)) {
				$credits = $credits_uitnodigingen * ($record->weging/100);
				$query2 = "UPDATE websites SET credits_uitnodigingen = credits_uitnodigingen + $credits WHERE id = $record->id";
				$sql2 = mysql_query($query2) or die ( mysql_error( ) );
				$weging_teller = $weging_teller - $record->weging;
			}
			
			$credits_over = $credits_uitnodigingen * ($weging_teller/100);	
			$query = "UPDATE users SET credits = credits + $credits_over WHERE id = ".$_SESSION['userid']."";
			$sql = mysql_query($query) or die ( mysql_error( ) );
			
			
			echo "<SCRIPT LANGUAGE='JavaScript' TYPE='text/javascript'>
			newwindow=window.open('$url_tonen','Popup','height=600,width=800');
			</SCRIPT>";
		}


} else {
	$query= "INSERT INTO uitnodiging_user (website_id , user_id) VALUES ('".$_GET['id']."', '".$_SESSION['userid']."')";
	$sql = mysql_query($query) or die ( mysql_error( ) );
}

echo "<SCRIPT LANGUAGE='JavaScript' TYPE='text/javascript'>newwindow=history.back();</SCRIPT>";
	
	
	
	
} else {
	
  for ($i=1; $i<100; $i++) {
	$query = "SELECT * FROM websites WHERE activated = 1 AND userid != ".$_SESSION['userid']." AND credits_uitnodigingen >= $credits_uitnodigingen2 ORDER BY rand() LIMIT 1";
	$sql = mysql_query($query) or die ( mysql_error( ) );
	while($record = mysql_fetch_object($sql)){
	
		$query2 = "SELECT * FROM uitnodiging_user WHERE website_id = $record->id AND user_id = ".$_SESSION['userid']."";
		$sql2 = mysql_query($query2) or die ( mysql_error( ) );
		while($record2 = mysql_fetch_object($sql2)){
			$fout = 1;
		}
	
		if(!isset($fout)) {
			echo "<b>$record->name</b><br><i>--> $record->description</i><br><a href='index.php?pagina=uitnodigingen_v&id=$record->id&accept=1'>[accepteren]</a> <a href='http://www.promotiekingdom.nl/index.php?pagina=uitnodigingen_v&id=$record->id&accept=0'>[annuleren]</a><br>";
			$i=101;
		}
	}
	
 }
if(isset($fout)) {
	echo "Geen uitnodigingen gevonden. Probeer het later nog eens.";
}
 
}

?>

Hoe krijg ik dat hij de site niet in een popup opent maar echt in een geheel nieuw venster?

Onderin je code heb je een blokje Javascript staan die met window.open de url ($url_tonen) opent in een popup.