--- loncom/homework/functionplotresponse.pm	2011/04/04 21:06:46	1.59
+++ loncom/homework/functionplotresponse.pm	2011/04/05 02:29:22	1.61
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # option list style responses
 #
-# $Id: functionplotresponse.pm,v 1.59 2011/04/04 21:06:46 www Exp $
+# $Id: functionplotresponse.pm,v 1.61 2011/04/05 02:29:22 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -380,7 +380,7 @@ sub answer_spline_script {
    if ($order<2) { $order=2; }
    if ($order>8) { $order=8; }
    $Apache::functionplotresponse::counter++;
-   my $label='C'.$Apache::functionplotresponse::counter;
+   my $label='CSpline'.$Apache::functionplotresponse::counter;
    my $output='document.ggbApplet_'.$id.'.evalCommand("'.$label.'=Spline'.$order.'[';
    for (my $i=0;$i<=$#points;$i+=4) {
       $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),";
@@ -388,8 +388,12 @@ sub answer_spline_script {
    $output=~s/\,$//;
    $output.=']");'."\n";
    for (my $i=2; $i<2*$order; $i+=2) {
-       $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.$i.'",0,170,0);'."\n";
+       $output.='document.ggbApplet_'.$id.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n";
    }
+   for (my $i=1; $i<2*$order; $i+=2) {
+       $output.='document.ggbApplet_'.$id.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n";
+   }
+
    return $output;
 }