d3.select("#clink").on("click",function(){
  var newWindow = window.open('candy','_blank');
});

var ciface =" #exec candy_loader/candyInterface.pl&v=";
d3.json(ciface+"isOn" ,function(d){
  if(d != undefined){
    if (d.a==1) { on(); }
    else if (d.a==0) { off(); }} 
  else {console.error(ciface+"isOn");}
});

d3.select("#myonoffswitch")
  .on("change",function(){
    if (this.checked) { on();}
    else {off();} 
});

function on(){
 d3.select("#clink").style("visibility","visible");
  d3.json(ciface+"on",function(d){
    if (d.a==1){
      d3.select("#clink").style("visibility","visible");
      d3.select("#myonoffswitch").property("checked","checked"); }
    else {
      d3.select("#myonoffswitch").property("checked","");
}}); }

function off(){
 d3.select("#clink").style("visibility","hidden");
  d3.json(ciface+"off",function(d){
    if (d.a==1){
      d3.select("#clink").style("visibility","hidden");
      d3.select("#myonoffswitch").property("checked",""); }
    else {
      d3.select("#myonoffswitch").property("checked","checked");
}}); }