var browserName = navigator.appName;
    var browserVer = parseInt(navigator.appVersion);
  	var stringTowrite = "";	
	if ((browserName == "Netscape") && (browserVer >= 4)) {
		var userHeight = window.innerHeight;}
    if ((browserName == "Microsoft Internet Explorer") && (browserVer >= 4)) {
		var userHeight = document.body.clientHeight;
	}
		var xx = Math.ceil(userHeight - 200);
        if ((xx > 0) && (((browserName == "Netscape") && (browserVer >= 4)) || ((browserName == "Microsoft Internet Explorer") && (browserVer >= 4)))){
		var stringTowrite = "<img src=\"/img/0.gif\" height=\"" + xx +"\"  width=\"1\" alt=\"GoTango\" border=\"0\">";
document.write(stringTowrite);}