function img_act(imgName) { 
	if (document.images != null) { 
		imgOn = eval(imgName + "_on.src");
		document [imgName].src = imgOn;
   }
}

function img_inact(imgName) { 
	if (document.images != null) { 
			imgOff = eval(imgName + "_off.src");
			document [imgName].src = imgOff;	
  }
}


function navigation(url) {
	site_url = url + ".html";
	top.location.href = site_url;
	top.focus();
}

 

window.onerror=null;