$_ = $header;

s/<_CGI>/$cgi/gi;
s/<_GRAFIK>/$graphics/gi;
s/<_FONT>/$font/gi;
s/<_BFC>/$bodyfontcolor/gi;
s/<_BGC>/$bgcolor/gi;
s/<_AL>/$alink/gi;
s/<_AV>/$avisited/gi;
s/<_AA>/$aactive/gi;
s/<_AH>/$ahover/gi;
s/<_SBGC>/$selectbgc/gi;
s/<_SFONT>/$selectfont/gi;
s/<_SS>/$selectsize/gi;
s/<_TABGC>/$textareabgc/gi;
s/<_TAFONT>/$textareafont/gi;
s/<_TAS>/$textareasize/gi;
s/<_BBGC>/$buttonbgc/gi;
s/<_BFONT>/$buttonfont/gi;
s/<_BS>/$buttonsize/gi;
s/<_TFONT>/$textfont/gi;
s/<_TBGC>/$textbgc/gi;
s/<_TS>/$textsize/gi;

$header = $_;