var browser = false;
browser = document.images;

var loaded = 0;

// set up variables
if (browser) initImages();

// set up and pre-load all mouseOver images
function initImages() {

  nav_bt10 = new Image(65,30);
	nav_bt10.src = '/images/bt_andys.0.gif';
  nav_bt11 = new Image(65,30);
  nav_bt11.src = '/images/bt_andys.1.gif';

  nav_bt20 = new Image(53,30);
	nav_bt20.src = '/images/bt_winners.0.gif';
  nav_bt21 = new Image(53,30);
  nav_bt21.src = '/images/bt_winners.1.gif';
  
  nav_bt30 = new Image(47,30);
	nav_bt30.src = '/images/bt_jurors.0.gif';
  nav_bt31 = new Image(47,30);
  nav_bt31.src = '/images/bt_jurors.1.gif';
 
  nav_bt40 = new Image(66,30);
	nav_bt40.src = '/images/bt_show.0.gif';
  nav_bt41 = new Image(66,30);
  nav_bt41.src = '/images/bt_show.1.gif';
      
	loaded = 1;
  }

// turn the inages ON
function overRunImg(imgName)  {
  if (browser) {
    x = eval("nav_" + imgName + "1.src");
    eval("document.nav_" + imgName + ".src = x");
    }
  }

// turn the inages OFF
function outRunImg(imgName)  {
  if (browser) {
    a = eval("nav_" + imgName + "0.src");
    eval("document.nav_" + imgName + ".src = a");
    }
  }