Correct me if I am wrong, but the problem is here:

if($v_file){
print "<br><center><a href=\"parse_test.pl?pos=$pos\"><font color=#ad0
+000><b>more >>></b></font></a></center>";
}else{
    print "End";
}
# save $pos somewhere for the next page view
#How actualy save this, where could I do this?
$pos = tell(VIEWFILE);
close VIEWFILE;
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It should be this way:

$pos = tell(VIEWFILE);
if($v_file){
print "<br><center><a href=\"parse_test.pl?pos=$pos\"><font color=#ad0
+000><b>more >>></b></font></a></center>";
}else{
    print "End";
}
close VIEWFILE;
[download]