<?
function get_screenshot($link){
  $content = @file_get_contents('http://open.thumbshots.org/image.pxf?url='.$link);
  $fp = @fopen('image.gif',"w");
  @fwrite($fp,$content);
  fclose($fp);
  return  '<img src="image.gif" alt="" />';
} 

print get_screenshot('http://www.gerenweb.com');
?>