Hvorfor skære den kanterne af

Når jeg henter dette script i en iframe, klipper den i kanten, så det ikke er hele banneret der bliver vist.. ?

Se venstre hjørne af : www.freerollpoker.dk

Hvordan retter jeg dette..?

<?php

$option = "banner";

$sites[0] = array("http://www.bet356.com", "klik her", 1, "250x250bet365.gif");
$sites[1] = array("http://www.partypoker.com", "klik her", 1, "250x250partypoker.gif");
$sites[2] = array("http://www.pokerchamps.com", "klik her", 1, "250x250pokerchamps.gif");


$countsites = count($sites);

for($i=0; $i<$countsites; $i++)
    {
    for($x=0; $x<$sites[$i][2]; $x++)
        {
        if($option != null)
            {
            $mylist[] = array($sites[$i][0],$sites[$i][1],$sites[$i][3]);
            }
        else
            {
            echo("Error deciding option.");
            exit();
            }
        }
    }

$countlist = count($mylist);

$countlist = $countlist - 1;

$picker = rand(0, $countlist);

if($option == "link")
    {
    echo("<a href='" . $mylist[$picker][0] . "' target=\"_blank\">" . $mylist[$picker][1] . "</a>");
    }

else if($option == "banner")
    {
    echo("<a href='" . $mylist[$picker][0] . "' target=\"_blank\"><img alt='" . $mylist[$picker][1] . "' src='" . $mylist[$picker][2] . "' /></a>");
    }

else
    {
    echo("Error deciding option.");
    exit();
    }

//Created by James Barnsley. All rights reserved.

?>