var BrowserOk='';
  
  if ((navigator.userAgent.indexOf("Mozilla/4.") != -1) || (navigator.userAgent.indexOf("Mozilla/3.") != -1)) {    
    BrowserOk='y';
	img0on = new Image(61,43);
	img0on.src = "/Applications/Heliview.nsf/home_on.gif"; 
	img0off = new Image(61,43);
	img0off.src = "/Applications/Heliview.nsf/home_off.gif"; 
	img1on = new Image(84,43);
	img1on.src = "/Applications/Heliview.nsf/research_on.gif"; 
	img1off = new Image(84,43);
	img1off.src = "/Applications/Heliview.nsf/research_off.gif";
	img2on = new Image(178,43);
	img2on.src = "/Applications/Heliview.nsf/conferences_on.gif"; 
	img2off = new Image(178,43);
	img2off.src = "/Applications/Heliview.nsf/conferences_off.gif";
	img3on = new Image(70,43);
	img3on.src = "/Applications/Heliview.nsf/nieuws_on.gif"; 
	img3off = new Image(70,43);
	img3off.src = "/Applications/Heliview.nsf/nieuws_off.gif";
	img4on = new Image(74,43);
	img4on.src = "/Applications/Heliview.nsf/contact_on.gif"; 
	img4off = new Image(74,43);
	img4off.src = "/Applications/Heliview.nsf/contact_off.gif";
	img5on = new Image(88,43);
	img5on.src = "/Applications/Heliview.nsf/vacatures_on.gif"; 
	img5off = new Image(88,43);
	img5off.src = "/Applications/Heliview.nsf/vacatures_off.gif";
	img6on = new Image(75,43);
	img6on.src = "/Applications/Heliview.nsf/training_on.gif"; 
	img6off = new Image(75,43);
	img6off.src = "/Applications/Heliview.nsf/training_off.gif";
					}
function glow(x, light) {
    if (BrowserOk) { 
      if (light) {
        document.images[x].src=eval(x+'on.src');
      }
      else {
        document.images[x].src=eval(x+'off.src');
      }
    }
  }