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(125,31);
  	nav_bt10.src = 'images/bt_products.0.gif';
    nav_bt11 = new Image(125,31);
    nav_bt11.src = 'images/bt_products.1.gif';

    nav_bt20 = new Image(145,31);
  	nav_bt20.src = 'images/bt_how_top.0.gif';
    nav_bt21 = new Image(145,31);
    nav_bt21.src = 'images/bt_how_top.1.gif';
    
    nav_bt30 = new Image(156,20);
  	nav_bt30.src = 'images/bt_team.0.gif';
    nav_bt31 = new Image(156,20);
    nav_bt31.src = 'images/bt_team.1.gif';

    nav_bt40 = new Image(156,20);
  	nav_bt40.src = 'images/PARTNERS---LT-GREEN.gif';
    nav_bt41 = new Image(156,20);
    nav_bt41.src = 'images/PARTNERS---DK-GREEN.gif';
    
    nav_bt50 = new Image(156,20);
  	nav_bt50.src = 'images/bt_investor.0.gif';
    nav_bt51 = new Image(156,20);
    nav_bt51.src = 'images/bt_investor.1.gif';

    nav_bt60 = new Image(156,20);
  	nav_bt60.src = 'images/bt_news.0.gif';
    nav_bt61 = new Image(156,20);
    nav_bt61.src = 'images/bt_news.1.gif';
    
    nav_bt70 = new Image(156,20);
  	nav_bt70.src = 'images/bt_how.0.gif';
    nav_bt71 = new Image(156,20);
    nav_bt71.src = 'images/bt_how.1.gif';
    
    nav_bt80 = new Image(156,20);
  	nav_bt80.src = 'images/bt_tech.0.gif';
    nav_bt81 = new Image(156,20);
    nav_bt81.src = 'images/bt_tech.1.gif';
        
    nav_bt90 = new Image(156,20);
  	nav_bt90.src = 'images/bt_faqs.0.gif';
    nav_bt91 = new Image(156,20);
    nav_bt91.src = 'images/bt_faqs.1.gif';
        
    nav_bt100 = new Image(156,20);
  	nav_bt100.src = 'images/bt_demo.0.gif';
    nav_bt101 = new Image(156,20);
    nav_bt101.src = 'images/bt_demo.1.gif';
        
    nav_bt110 = new Image(156,20);
  	nav_bt110.src = 'images/bt_who.0.gif';
    nav_bt111 = new Image(156,20);
    nav_bt111.src = 'images/bt_who.1.gif';

    nav_bt120 = new Image(156,20);
  	nav_bt120.src = 'images/bt_modules.0.gif';
    nav_bt121 = new Image(156,20);
    nav_bt121.src = 'images/bt_modules.1.gif';

    nav_bt130 = new Image(156,20);
  	nav_bt130.src = 'images/bt_bod.0.gif';
    nav_bt131 = new Image(156,20);
    nav_bt131.src = 'images/bt_bod.1.gif';

    nav_bt140 = new Image(156,20);
  	nav_bt140.src = 'images/bt_corporate.0.gif';
    nav_bt141 = new Image(156,20);
    nav_bt141.src = 'images/bt_corporate.1.gif';

		loaded = 1;

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

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