function preloadimages(route) {
heating_out = new Image();
heating_out.src=route+"images/buttons/heating.gif";
heating_over = new Image();
heating_over.src=route+"images/buttons/heatingover.gif";

rfid_out = new Image();
rfid_out.src=route+"images/buttons/rfid.jpg";
rfid_over = new Image();
rfid_over.src=route+"images/buttons/rfidover.jpg";

engraving_out = new Image();
engraving_out.src=route+"images/buttons/engraving.gif";
engraving_over = new Image();
engraving_over.src=route+"images/buttons/engravingover.gif";

incineration_out = new Image();
incineration_out.src=route+"images/buttons/incineration.gif";
incineration_over = new Image();
incineration_over.src=route+"images/buttons/incinerationover.gif";

homebutton_out = new Image();
homebutton_out.src=route+"images/buttons/home.jpg";
homebutton_over = new Image();
homebutton_over.src=route+"images/buttons/homeover.jpg";

contactus_out = new Image();
contactus_out.src=route+"images/buttons/contactus.gif";
contactus_over = new Image();
contactus_over.src=route+"images/buttons/contactusover.gif";
}

function changeBGColor(s, i, l) {
  var n = document.getElementById(i);
  var c = "rgb(35,36,129)";
  if (s=="on"){
     c="rgb(255,255,255)";
     document.getElementById(l).style["color"]="rgb(35,36,129)";
  };
  if (s=="off"){
     document.getElementById(l).style["color"]="white";
  }
  n.style["background"] = c;
}