diff --git a/inc/polyfill.php b/inc/polyfill.php
index ac40a00a..2b14c4dc 100644
--- a/inc/polyfill.php
+++ b/inc/polyfill.php
@@ -26,3 +26,162 @@ if (!function_exists('hash_equals')) {
 		return $answer === 0 && $olen === $tlen;
 	}
 }
+
+if (!function_exists('imagecreatefrombmp')) {
+	/*********************************************/
+	/* Fonction: imagecreatefrombmp              */
+	/* Author:   DHKold                          */
+	/* Contact:  admin@dhkold.com                */
+	/* Date:     The 15th of June 2005           */
+	/* Version:  2.0B                            */
+	/*********************************************/
+	function imagecreatefrombmp($filename) {
+		if (! $f1 = fopen($filename,"rb")) return FALSE;
+		$FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
+		if ($FILE['file_type'] != 19778) return FALSE;
+		$BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
+						'/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
+						'/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
+		$BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
+		if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
+		$BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
+		$BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
+		$BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
+		$BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
+		$BMP['decal'] = 4-(4*$BMP['decal']);
+		if ($BMP['decal'] == 4) $BMP['decal'] = 0;
+		$PALETTE = array();
+		if ($BMP['colors'] < 16777216)
+		{
+			$PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
+		}
+		$IMG = fread($f1,$BMP['size_bitmap']);
+		$VIDE = chr(0);
+		$res = imagecreatetruecolor($BMP['width'],$BMP['height']);
+		$P = 0;
+		$Y = $BMP['height']-1;
+		while ($Y >= 0)
+		{
+			$X=0;
+			while ($X < $BMP['width'])
+			{
+			if ($BMP['bits_per_pixel'] == 24)
+				$COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
+			elseif ($BMP['bits_per_pixel'] == 16)
+			{  
+				$COLOR = unpack("n",substr($IMG,$P,2));
+				$COLOR[1] = $PALETTE[$COLOR[1]+1];
+			}
+			elseif ($BMP['bits_per_pixel'] == 8)
+			{  
+				$COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
+				$COLOR[1] = $PALETTE[$COLOR[1]+1];
+			}
+			elseif ($BMP['bits_per_pixel'] == 4)
+			{
+				$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
+				if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
+				$COLOR[1] = $PALETTE[$COLOR[1]+1];
+			}
+			elseif ($BMP['bits_per_pixel'] == 1)
+			{
+				$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
+				if     (($P*8)%8 == 0) $COLOR[1] =  $COLOR[1]        >>7;
+				elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
+				elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
+				elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
+				elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
+				elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
+				elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
+				elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
+				$COLOR[1] = $PALETTE[$COLOR[1]+1];
+			}
+			else
+				return FALSE;
+			imagesetpixel($res,$X,$Y,$COLOR[1]);
+			$X++;
+			$P += $BMP['bytes_per_pixel'];
+			}
+			$Y--;
+			$P+=$BMP['decal'];
+		}
+		fclose($f1);
+		return $res;
+	}
+}
+
+if (!function_exists('imagebmp')) {
+	function imagebmp(&$img, $filename='') {
+		$widthOrig = imagesx($img);
+		$widthFloor = ((floor($widthOrig/16))*16);
+		$widthCeil = ((ceil($widthOrig/16))*16);
+		$height = imagesy($img);
+		$size = ($widthCeil*$height*3)+54;
+		// Bitmap File Header
+		$result = 'BM';	 // header (2b)
+		$result .= int_to_dword($size); // size of file (4b)
+		$result .= int_to_dword(0); // reserved (4b)
+		$result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b)
+		// Bitmap Info Header
+		$result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b)
+		$result .= int_to_dword($widthCeil); // width of bitmap (4b)
+		$result .= int_to_dword($height); // height of bitmap (4b)
+		$result .= int_to_word(1);	// biPlanes = 1 (2b)
+		$result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b
+		$result .= int_to_dword(0); // RLE COMPRESSION (4b)
+		$result .= int_to_dword(0); // width x height (4b)
+		$result .= int_to_dword(0); // biXPelsPerMeter (4b)
+		$result .= int_to_dword(0); // biYPelsPerMeter (4b)
+		$result .= int_to_dword(0); // Number of palettes used (4b)
+		$result .= int_to_dword(0); // Number of important colour (4b)
+		// is faster than chr()
+		$arrChr = array();
+		for ($i=0; $i<256; $i++){
+		$arrChr[$i] = chr($i);
+		}
+		// creates image data
+		$bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0);
+		// bottom to top - left to right - attention blue green red !!!
+		$y=$height-1;
+		for ($y2=0; $y2<$height; $y2++) {
+			for ($x=0; $x<$widthFloor;	) {
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+				$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+			}
+			for ($x=$widthFloor; $x<$widthCeil; $x++) {
+				$rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor;
+				$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
+			}
+			$y--;
+		}
+		// see imagegif
+		if ($filename == '') {
+			echo $result;
+		} else {
+			$file = fopen($filename, 'wb');
+			fwrite($file, $result);
+			fclose($file);
+		}
+	}
+	// imagebmp helpers
+	function int_to_dword($n) {
+		return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255);
+	}
+	function int_to_word($n) {
+		return chr($n & 255).chr(($n >> 8) & 255);
+	}
+}