Function Gradient($height,$width,$base,$end, $alpha=20) {
	$im = ImageCreate($width,$height);
	sscanf($base, "%2x%2x%2x", $rbase, $gbase, $bbase);
	sscanf($end, "%2x%2x%2x", $rend, $gend, $bend);
	$varstep=$height;

	if ($rbase==$rend) {
		$rend = $rend -1;
	}
	if ($gbase==$gend) {
		$gend = $gend -1;
	}
	if ($bbase==$bend) {
		$bend = $bend -1;
	}
	if ($varstep == 0) {
		$varstep=1;
	}
	$rmod = ($rend - $rbase) /$varstep;
	$gmod = ($gend - $gbase) /$varstep;
	$bmod = ($bend - $bbase) /$varstep;

	$white=ImageColorAllocateAlpha($im,255,255,255,$alpha);

	for($i=1;$i<$varstep;$i=$i+2) {
		$clour1 = ($i*$rmod)+$rbase;
		$clour2 = ($i*$gmod)+$gbase;
		$clour3 = ($i*$bmod)+$bbase;
		$col=ImageColorAllocateAlpha($im,$clour1,$clour2,$clour3,$alpha);
		imagefilledrectangle($im,$width-$width+1,$height-$i,$width,$height-$i+1,$col);
	}
	return $im;
}