help !

[Vo-O]

how to remeov images copiryght this scripts..

<?php
error_reporting(0);
if(isset($_GET[f])){
if(is_file($_GET[f]) AND !empty($_GET[f]) and !ereg('\.',dirname($_GET[f]))){
$f=str_replace('./','',$_GET[f]);
$f=str_replace('.\\','',$f);
if(file_exists($f)){
$d=dirname($f);

$nx=(int)50;
$im3=ImageCreateFromPng("copyright.png");
$nx=(int)ImageSX($im3);
$szs=GetImageSize($f);
$rx=$szs[0];
$ry=$szs[1];
$p=(int)round($nx*100/$rx);
$ny=(int)round($ry*$p/100);
$cy=$ny-12;
$type=$szs[2];
$ct=array('0'=>'false','1'=>'Gif','2'=>'Jpg','3'=> 'Png');
$t=$ct[$type];
if($t!=='false'){

if ($type==1) {$funci='imagecreatefromgif'; $funco="imagegif";}
if ($type==2) {$funci='imagecreatefromjpeg'; $funco="imagejpeg";}
if ($type==3) {$funci='imagecreatefrompng'; $funco="imagepng";}
if($type)
{
$im1 = @$funci($f);
$im2ImageCreateTrueColor($nx,$ny);
@ImageCopyResampled($im2, $im1, 0,0,0,0,$nx,$ny,$rx,$ry);
@ImageCopy($im2,$im3,0,$cy,0,0,$nx,$ny);

@header("Content-type: image/$t");
@$funco($im2);
ImageDestroy($im1);
ImageDestroy($im2);
ImageDestroy($im3);
}

}else{
exit;
}}else{
exit;
}}else{
exit;}}else{
exit;}
?>