function favoritos()
{
	if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) 	
	{
		window.external.AddFavorite ("http://www.hotelsaja.es");
	}
	else
	{
		var msg = "¡Para añadirnos a tus favoritos pulsa Ctrl + D!";
		if(navigator.appName == "Netscape") msg += " (CTRL-D)";
		alert(msg);
	}
}
function ini() 
{
	if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4))
	{
		document.body.style.behavior='url(#default#homepage)';
		document.body.setHomePage('http://www.hotelsaja.es');
	}
	else
	{
		if(navigator.appName == "Netscape") alert("Su navegador no acepta esta opción automática.");
	}
}
function sw(loc, titulo, ancho, alto)
{
	options="toolbar=0,Status=0,menubar=0,scrollbars=no,resizable=0,location=0,directories=0,width=" + ancho + ",height=" + alto;
	window.open(loc,titulo,options);
}
function sw2(loc, titulo, ancho, alto)
{
	options="toolbar=0,Status=0,menubar=0,scrollbars=yes,resizable=1,location=0,directories=0,width=" + ancho + ",height=" + alto;
	window.open(loc,titulo,options);z
}


//foros
function valida(arg,texto)
{
	longitud = 5;
	if(parseInt(document.frmNew.txtTitulo.value.length) > longitud)
	{
		return true;
	}
	else{
		alert(texto +" (" + longitud + ").");
		return false;
	}
}
function confirmacion(arg,texto)
{
	if(confirm(texto))
		document.location.href = arg;
}
function Operacion(cual1,cual2,cual3)
{
	document.EliminarReg.foro.value=cual1;
	document.EliminarReg.tema.value=cual2;
	document.EliminarReg.niv.value=cual3;
	document.EliminarReg.action="tutor_activa_foro.php";
	document.EliminarReg.submit();
}
function preview(img,ancho,alto){
	window.open("/archivos/imagenes_contenidos/"+img, "", "width="+ancho+",height="+alto+", scrollbars=auto,directories=0,status=0");
}

 <!-- // Detect Client Browser type
 var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
 var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
 var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
 jsVersion = 1.1;
 // JavaScript helper required to detect Flash Player PlugIn version information
 function JSGetSwfVer(i){
    // NS/Opera version >= 3 check for Flash plugin in plugin array
    if (navigator.plugins != null && navigator.plugins.length > 0) {
       if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
          var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
             var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
          descArray = flashDescription.split(" ");
          tempArrayMajor = descArray[2].split(".");
          versionMajor = tempArrayMajor[0];
          versionMinor = tempArrayMajor[1];
          if ( descArray[3] != "" ) {
             tempArrayMinor = descArray[3].split("r");
          } else {
             tempArrayMinor = descArray[4].split("r");
          }
             versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
             flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
          } else {
          flashVer = -1;
       }
    }
    // MSN/WebTV 2.6 supports Flash 4
    else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
    // WebTV 2.5 supports Flash 3
    else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
    // older WebTV supports Flash 2
    else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
    // Can't detect in all other cases
    else {
       
       flashVer = -1;
    }
    return flashVer;
 }
 // When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
 function DetectFlashVer(reqMajorVer, reqMinorVer, reqRevision)
 {
    reqVer = parseFloat(reqMajorVer + "." + reqRevision);
	 
       // loop backwards through the versions until we find the newest version   
    for (i=25;i>0;i--) {   
       if (isIE && isWin && !isOpera) {
          versionStr = VBGetSwfVer(i);
       } else {
          versionStr = JSGetSwfVer(i);      
       }
       if (versionStr == -1 ) {
          return false;
       } else if (versionStr != 0) {
          if(isIE && isWin && !isOpera) {
             tempArray         = versionStr.split(" ");
             tempString        = tempArray[1];
             versionArray      = tempString .split(",");            
          } else {
             versionArray      = versionStr.split(".");
          }
          versionMajor      = versionArray[0];
          versionMinor      = versionArray[1];
          versionRevision   = versionArray[2];
          
          versionString     = versionMajor + "." + versionRevision;   // 7.0r24 == 7.24
          versionNum        = parseFloat(versionString);
		 
            // is the major.revision >= requested major.revision AND the minor version >= requested minor
          if ( (versionMajor > reqMajorVer) && (versionNum >= reqVer) ) {
				
             return true;
          } else {
             return ((versionNum >= reqVer && versionMinor >= reqMinorVer) ? true : false );   
          }
       }
    }   
 }
 // -->
 function MostrarFlash(width, height, ruta){
 //Funcion que nos saca el Flash. Le pasamos como argumentos las dimensions del flash y la ruta. En el caso que el usuario no tenga la version de Flash necesaria muestra un mensaje  con una url para descargar la version de Flash necesaria
 var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
 if (hasReqestedVersion) {  // Si detectamos que la version es la correcta
    var oeTags = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"'
     + 'width='+width+' height='+height+''
     + 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">'
     + '<param name="movie" value='+ruta+' /><param name="quality" value="high" /><param name="bgcolor" value="#FFFFFF" />'
     +'<param name=menu value="false">'
	 + '<embed src='+ruta+' quality="high" bgcolor="#FFFFFF" '
     + 'width='+width+' height='+height+' name="detectiontest" aligh="middle"'
     + 'play="true"'
     + 'loop="false"'
     + 'quality="high"'
     + 'allowScriptAccess="sameDomain"'
     + 'type="application/x-shockwave-flash"'
     + 'pluginspage="http://www.macromedia.com/go/getflashplayer">'
     + '<\/embed>'
     + '<\/object>';
     document.write(oeTags);   // Muestra el elemento Object
   } else {  // Si la version de flash es inferior  muestra mensaje de aviso para que descargue la version necesaria
	
	  var alternateContent = '<BR><BR><BR><BR><BR><BR><a href="http://www.macromedia.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash&Lang=Spanish&P5_Language=Spanish"><CENTER><IMG SRC="altimage.gif" HEIGHT="283" WIDTH="600" border=0></CENTER></a>' 
     
	 document.write(alternateContent);  
 
   }

 // -->
 }