I made a script to start a download of a picture, when u cancel the download and refresh the parent the binary data of the download is displayed in the browser window.

How to reproduce:
- call the script below from a simple HTML page.
- Cancel the download
- refresh the HTML page

Then you will see the binary data of the image ($file). So the $file must be a valid image.

http://lucard.no-ip.com/hety/1.php <-- for demo 
1.php is the simple html file.... 

<? 
$file="images/dscf0009.jpg";
$fp=@fopen($file,"r"); 
header("Content-Type: application/force-download");  
header("Content-Length: " .filesize($file));  
if(preg_match("/MSIE 5.5/", $HTTP_USER_AGENT)) {  
header("Content-Disposition: filename=\"".$file ."\"");  
}  
else {  
header("Content-Disposition: attachment; filename=\"".$file ."\""); 
}  
header("Content-Transfer-Encoding: binary");  

fpassthru($fp); 
die(); 
?>