function getAppVersion()		
		{		
		appname= navigator.appName;
		appversion = navigator.appVersion;
		majorver = appversion.substring(0, 1);
		if ( (appname == "Netscape") && ( majorver >= 3 ) ) return 1;
		if ( (appname == "Microsoft Internet Explorer") && (majorver >= 4) ) return 1;
		return 0;		
		}
	function swtch(num, imgname) 
		{
		if (getAppVersion()) 
			{
			document[imgname].src = img[num].src;
			}
		}
		
<!-- Comienza la funcion wiper
                timeID = 5;
                stcnt = 11;
		msg = "Wellcome to the Mostoles Nocturno Gallery!!";
		wmsg = new Array(33);
		wmsg[0] = msg;
		blnk = "                                                               ";
		for (i = 1; i < 32; i++) {
		b = blnk.substring(0, i);
		wmsg[i] = "";
		for (j = 0; j < msg.length; j++) wmsg[i] = wmsg[i] + msg.charAt(j) + b;
		}
		function wiper() {
		if (stcnt > -1) str = wmsg[stcnt]; 
		else str = wmsg[0];
		if (stcnt-- < -40) stcnt = 31;
		status = str;
		clearTimeout(timeID);
		timeID = setTimeout("wiper()", 150);
		}