Transparant gifs problem

[petersJazz]

hi,

refering to thread434-1418977

I still have this small problem on the site

http://www.cmsone.se/test1

where it is a admin page where you can download backgrounds. I split the gif file into nine pieces but then the transparent marker goes away. My next idee is to use black (#000000) as a marker for transparant but this doesnt work for me.

function uploadbg($tt){
$bgname=$_REQUEST['bgname'];
$uploaddir='../bg/';
$f=$uploaddir.'bg'.$bgname;
$filename=$_FILES['userfile']['name'];
$filenamex=$_FILES['userfile']['tmp_name'];
$uploadfile=$uploaddir.$filename;
$filetype=$_FILES['userfile']['type'];
$filesize=$_FILES['userfile']['size'];
if ($_FILES['userfile']['error']==2) {
...
}elseif ($filetype == 'image/gif') {
$im0=imagecreatefromgif($filenamex);
imagealphablending($im0, false);
imagesavealpha($im0, true);
$size=getimagesize($filenamex);
$w=$size[0]-60;
$h=$size[1]-60;
if ($w<10 || $h<10) {
...
}
$trno = imagecolortransparent($im0);
if ($trno >= 0) {
$rgb = imagecolorsforindex($im0, $transp);
$transp = ($rgb['red'] << 16) | ($rgb['green'] << 8) | $rgb['blue'];
imagecolortransparent($im0, imagecolorallocate($im0, 0, 0, 0));
}
$this->doimg($im0,0,0,30,30,$f.'1.gif',$transp,$trno);
$this->doimg($im0,30,0,$w,30,$f.'2.gif',$transp,$trno);
$this->doimg($im0,$w+30,0,30,30,$f.'3.gif',$transp,$trno);
$this->doimg($im0,0,30,30,$h,$f.'4.gif',$transp,$trno);
$this->doimg($im0,30,30,$w,$h,$f.'5.gif',$transp,$trno);
$this->doimg($im0,$w+30,30,30,$h,$f.'6.gif',$transp,$trno);
$this->doimg($im0,0,$h+30,30,30,$f.'7.gif',$transp,$trno);
$this->doimg($im0,30,$h+30,$w,30,$f.'8.gif',$transp,$trno);
$this->doimg($im0,$w+30,$h+30,30,30,$f.'9.gif',$transp,$trno);
logg('page',$tt[6].$bgname);
return;
} else {
...
}
}