<?
$img_resize=$_GET["img_resize"];

function preview($name_big)
 {
   list($width, $height) = getimagesize($name_big);
   if ($height > 200)
     {       $fw = $width/2;
     }
    elseif($width>100)
     {        $fw = 100;
     }
    else
     {     	$fw = 60;
     }

   $brw = 0;
   $brh = 0;

   $ext = strtolower(strrchr(basename($name_big), ".")); // Получаем формат уменьшаемого изображения
   $extentions = array('.jpg', '.gif', '.png');          // Определяем формат уменьшаемой картинки

   $fh = $height * ($fw / $width);

   $nimg = @imagecreatetruecolor(($brw * 2 + $fw), ($brh * 2 + $fh)) or die("Cannot Initialize new GD image stream");

   switch ($ext)
     {
       case '.jpg': $nimgg = @imagecreatefromjpeg($name_big); break;
       case '.gif': $nimgg = @imagecreatefromgif($name_big); break;
       case '.png': $nimgg = @imagecreatefrompng($name_big); break;
     }

   imagecopyresampled($nimg,$nimgg,$brw,$brh,0,0,$fw,$fh,$width,$height);

   switch ($ext)
     {
	   case '.jpg': imagejpeg($nimg); break;
       case '.gif': imagegif($nimg);  break;
       case '.png': imagepng($nimg);  break;
	 }

   switch ($ext)
     {
	   case '.jpg': header('Content-type: image/jpeg'); break;
       case '.gif': header('Content-type: image/gif');  break;
       case '.png': header('Content-type: image/png');  break;
	 }
}

preview($img_resize);
?>