var preload = false;
var on = new Array(5);
var off = new Array(5);

function preloadImages() {
      if(document.images) {
            for(i = 0; i < 5; i++) {
                  on[i] = new Image();
                  off[i] = new Image();
            }

            on[0].src = "/petsafe/furniture/buttons/home_on.jpg";
            on[1].src = "/petsafe/furniture/buttons/contact_on.jpg";
            on[2].src = "/petsafe/furniture/buttons/quality_on.jpg";
            on[3].src = "/petsafe/furniture/buttons/products_on.jpg";
            on[4].src = "/petsafe/furniture/buttons/energy_on.jpg";

            off[0].src = "/petsafe/furniture/buttons/home_off.jpg";
            off[1].src = "/petsafe/furniture/buttons/contact_off.jpg";
            off[2].src = "/petsafe/furniture/buttons/quality_off.jpg";
            off[3].src = "/petsafe/furniture/buttons/products_off.jpg";
            off[4].src = "/petsafe/furniture/buttons/energy_off.jpg";

            preload = true;
      }
}

function buttonOn(imageName, index) {
      if(!preload) return;
      if(document.images) {
            document.images[imageName].src = on[index].src;
      }
}

function buttonOff(imageName, index) {
      if(!preload) return;
      if(document.images) {
            document.images[imageName].src = off[index].src;
      }
}

function openwin(url, windowID) {
	window.open(url, windowID,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=620,height=500');
}