Problems with transparency/antialias/png.. need urgent help

[Zacay]

Hello,

I am tryign to create a transparent image and draw a white line that has to me smooth.
This should be a problem right?
Well I got serious problems with it.
Let me show you:

This url has my example images and the code below (I couldn't use the [img] tag to show the php generated images.
http://www.zacay.se/image/

Method 1:

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<?

header("content-type: image/png");



// Create empty image

$image = imagecreatetruecolor(500, 500);



// The image background transparent

imagealphablending($image, false);

imagesavealpha($image, true);

$bgcolor = imagecolorallocatealpha($image, 255, 255, 255, 127);

imagefill($image, 0, 0, $bgcolor);



// Drawing the lines

imageantialias($image, true);

$white = imagecolorallocate($image, 255, 255, 255);

imageline($image, 0, 0, 250, 500, $white);

imageline($image, 0, 100, 500, 500, $white);

imageline($image, 0, 300, 500, 400, $white);

imageline($image, 0, 400, 500, 450, $white);



// Output the image

imagepng($image);

?>

Method 2:

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<?

header("content-type: image/png");



// Create empty image

$image = imagecreatetruecolor(500, 500);



// The image background transparent

imagealphablending($image, true);

imagecolortransparent($image, 0); // 0 = black, the default color then create an image



// Drawing the lines

imageantialias($image, true);

$white = imagecolorallocate($image, 255, 255, 255);

imageline($image, 0, 0, 250, 500, $white);

imageline($image, 0, 100, 500, 500, $white);

imageline($image, 0, 300, 500, 400, $white);

imageline($image, 0, 400, 500, 450, $white);



// Output the image

imagepng($image);

?>

So any ideas?
Am I doing this the wrong way?

[feyd]

1. using
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   tags helps us, help you.</li><li>Moved to <span style="font-weight: bold">Graphics</span>.</li></ol>

[Zacay]

Anyone please?