function switchImg(obj){

   selections = myform.bx.value;
   selection = selections.split("-");

   bx1 = selection[0];
   bx2 = selection[1];
   bx3 = selection[2];
   bx4 = selection[3];
   bx5 = selection[4];
   bx6 = selection[5];
   bx7 = selection[6];
   bx8 = selection[7];

   x=document.images[obj].src;
   y=x.indexOf(".gif");
   z=x.substr(y-1,1);

   if (z == 'n') {
      x='../obacore/toolbar/fboxy.gif'; yn='Y';
   } else {
      x='../obacore/toolbar/fboxn.gif'; yn='N';
   }

   if (obj == 'bx1') {bx1 = yn;}
   if (obj == 'bx2') {bx2 = yn;}
   if (obj == 'bx3') {bx3 = yn;}
   if (obj == 'bx4') {bx4 = yn;}
   if (obj == 'bx5') {bx5 = yn;}
   if (obj == 'bx6') {bx6 = yn;}
   if (obj == 'bx7') {bx7 = yn;}
   if (obj == 'bx8') {bx8 = yn;}

   selections=bx1 + '-' + bx2 + '-' + bx3 + '-' + bx4 + '-' + bx5 + '-' + bx6 + '-' + bx7 + '-' + bx8;

   document.images[obj].src = x;
   myform.bx.value=selections;
}

function setviz(obj){

   viz=myform.vz.value;

   if (viz == 'N') {viz='Y';} else {viz='N';}

   myform.vz.value=viz;
}