function _som(form)	{
                    som = eval(form.a.value) +eval(form.b.value)+eval(form.c.value) +eval(form.d.value)
                    +eval(form.e.value) +eval(form.f.value)+eval(form.g.value) +eval(form.h.value);
                    form.tot.value=som;
                    if (som==10) alert("Alle punten voor deze vraag zijn verdeeld!");
                    if (som>10) alert("Er zijn teveel punten voor deze vraag verdeeld!");
                }
                
                function _scores(doc) {
                    document.scores.vz.value=parseInt(document.vraag1.f.value)
                    +parseInt(document.vraag2.h.value)+parseInt(document.vraag3.a.value)
                    +parseInt(document.vraag4.d.value)+parseInt(document.vraag5.b.value)
                    +parseInt(document.vraag6.c.value)+parseInt(document.vraag7.g.value);

                    document.scores.vm.value=parseInt(document.vraag1.d.value)
                    +parseInt(document.vraag2.b.value)+parseInt(document.vraag3.c.value)
                    +parseInt(document.vraag4.f.value)+parseInt(document.vraag5.e.value)
                    +parseInt(document.vraag6.g.value)+parseInt(document.vraag7.a.value);

                    document.scores.pl.value=parseInt(document.vraag1.h.value)
                    +parseInt(document.vraag2.e.value)+parseInt(document.vraag3.d.value)
                    +parseInt(document.vraag4.c.value)+parseInt(document.vraag5.g.value)
                    +parseInt(document.vraag6.a.value)+parseInt(document.vraag7.f.value);

                    document.scores.wa.value=parseInt(document.vraag1.a.value)
                    +parseInt(document.vraag2.c.value)+parseInt(document.vraag3.g.value)
                    +parseInt(document.vraag4.h.value)+parseInt(document.vraag5.d.value)
                    +parseInt(document.vraag6.e.value)+parseInt(document.vraag7.b.value);

                    document.scores.bm.value=parseInt(document.vraag1.b.value)
                    +parseInt(document.vraag2.d.value)+parseInt(document.vraag3.h.value)
                    +parseInt(document.vraag4.g.value)+parseInt(document.vraag5.a.value)
                    +parseInt(document.vraag6.f.value)+parseInt(document.vraag7.e.value);

                    document.scores.bo.value=parseInt(document.vraag1.e.value)
                    +parseInt(document.vraag2.g.value)+parseInt(document.vraag3.f.value)
                    +parseInt(document.vraag4.a.value)+parseInt(document.vraag5.c.value)
                    +parseInt(document.vraag6.h.value)+parseInt(document.vraag7.d.value);

                    document.scores.gw.value=parseInt(document.vraag1.c.value)
                    +parseInt(document.vraag2.a.value)+parseInt(document.vraag3.e.value)
                    +parseInt(document.vraag4.b.value)+parseInt(document.vraag5.f.value)
                    +parseInt(document.vraag6.b.value)+parseInt(document.vraag7.h.value);

                    document.scores.af.value=parseInt(document.vraag1.g.value)
                    +parseInt(document.vraag2.f.value)+parseInt(document.vraag3.b.value)
                    +parseInt(document.vraag4.e.value)+parseInt(document.vraag5.h.value)
                    +parseInt(document.vraag6.d.value)+parseInt(document.vraag7.c.value);

                    document.scores.total.value=parseInt(document.scores.vz.value)
                    +parseInt(document.scores.vm.value)+parseInt(document.scores.pl.value)
                    +parseInt(document.scores.wa.value)+parseInt(document.scores.bm.value)
                    +parseInt(document.scores.bo.value)+parseInt(document.scores.gw.value)
                    +parseInt(document.scores.af.value);
                    
                    if (document.scores.total.value!=70)
                        alert("Totaal score is niet 70, corrigeer!");
                    }
                  
                  /* 
                    function _bar(high,val) {
                        return "<td class="mednormal" valign=bottom>",document.scores.vz.value,
                        "<table bgcolor=#aa2222 border=",border," height=",high,
                        " width=50 cellpadding=0 cellspacing=0>",
                        "<tr><td class="mednormal" align=center valign=bottom>",
                        "<font color=#00000 size=-1 >",val,"</font>",
                        "</td></tr></table></td>";
                    }
                  */  
                    function graph(vz,vm,pl,wa,bm,bo,gw,af)	{
                        document.writeln("<h2><center><font face=arial>Grafiek van de scores</font></center></h2>");
                        document.writeln("<table bgcolor=#ffffff height=200 width=400 border=0 align=center ><tr>");
                        document.write(
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*vz," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*vm," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*pl," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*wa," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*bm," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*bo," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*gw," width=50></td>",
                        "<td class=\"mednormal\" valign=bottom><img src=bluedot.gif border=0 height=",10*af," width=50></td>"
                    );
                    document.write('<tr><td class="mednormal">vz<td class="mednormal">vm<td class="mednormal">pl<td class="mednormal">wa<td class="mednormal">bm<td class="mednormal">bo<td class="mednormal">gw<td class="mednormal">af');
                    document.write("<tr><td class=\"mednormal\">",vz,'<td class="mednormal">',vm,"<td class=\"mednormal\">",pl,"<td class=\"mednormal\">",wa,"<td class=\"mednormal\">",bm,"<td class=\"mednormal\">",bo,"<td class=\"mednormal\">",gw,"<td class=\"mednormal\">",af,
                    "</table>");
                }
