if (document.images) {

  // new button
  installationsOn = new Image();
  installationsOn.src = "/images/nav/installations-ro.png"

  installationsOff = new Image();
  installationsOff.src = "/images/nav/installations.png"

  // new button
  resumeOn = new Image();
  resumeOn.src = "/images/nav/resume-ro.png"

  resumeOff = new Image();
  resumeOff.src = "/images/nav/resume.png"

  // new button
  statementOn = new Image();
  statementOn.src = "/images/nav/statement-ro.png"

  statementOff = new Image();
  statementOff.src = "/images/nav/statement.png"

  // new button
  pressOn = new Image();
  pressOn.src = "/images/nav/press-ro.png"

  pressOff = new Image();
  pressOff.src = "/images/nav/press.png"

  // new button
  sereOn = new Image();
  sereOn.src = "/images/nav/sere-ro.png"

  sereOff = new Image();
  sereOff.src = "/images/nav/sere.png"

  // new button
  contactOn = new Image();
  contactOn.src = "/images/nav/contact-ro.png"

  contactOff = new Image();
  contactOff.src = "/images/nav/contact.png"

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document.images[changeImages.arguments[i]].src = window[changeImages.arguments[i+1]].src;
    }
  }
}

function openNewWindow(theURL,winName,features) {
  window.open(theURL,winName,features);
}