/**
* funcion para mostrar y ocultar las diferentes capas de temas
*@Autor   Luciano Moreno
@param    id   identificador (id) de la capa a mostrar
*/
  
    function tema(id)
	{
	    /**
	    * detectamos el navegador cliente
	    */
        var ie=(document.all) ? 1:0;
	    var nc=(document.layers) ? 1:0;
	    var n6=(document.getElementById) ? 1:0;
		
		/**
		* mostramos la capa pasada como argumento, ocultando todas las demas
		*/
		if(ie)
		{
		    document.all['texto'].style.visibility="hidden";
			document.all['js'].style.visibility="hidden";
            document.all['form'].style.visibility="hidden";
			document.all['htm'].style.visibility="hidden";
			document.all['dhtm'].style.visibility="hidden";
			document.all['varios'].style.visibility="hidden";
            document.all['diseno'].style.visibility="hidden";
            document.all['enlaces'].style.visibility="hidden";
            document.all['asp2'].style.visibility="hidden";
            document.all['seguridad2'].style.visibility="hidden";
            document.all['script2'].style.visibility="hidden";
            document.all['vbscript2'].style.visibility="hidden";
            document.all['redes2'].style.visibility="hidden";
            document.all['cf2'].style.visibility="hidden";
            document.all['linux2'].style.visibility="hidden";
			document.all[id].style.visibility="visible";
			
		}
	    
		if(n6)
		{
		    document.getElementById('texto').style.visibility = "hidden";
			document.getElementById('js').style.visibility = "hidden";
            document.getElementById('form').style.visibility = "hidden";
			document.getElementById('htm').style.visibility = "hidden";
			document.getElementById('dhtm').style.visibility = "hidden";
			document.getElementById('varios').style.visibility = "hidden";
            document.getElementById('diseno').style.visibility = "hidden";
            document.getElementById('enlaces').style.visibility = "hidden";
            document.getElementById('asp2').style.visibility = "hidden";
            document.getElementById('seguridad2').style.visibility = "hidden";
            document.getElementById('script2').style.visibility = "hidden";
            document.getElementById('vbscript2').style.visibility = "hidden";
            document.getElementById('redes2').style.visibility = "hidden";
            document.getElementById('cf2').style.visibility = "hidden";
            document.getElementById('linux2').style.visibility = "hidden";
			document.getElementById(id).style.visibility = "visible";
			
		}
		
		if (nc) 
		{
            document.layers['texto'].visibility="hide";
		    document.layers['js'].visibility="hide";
            document.layers['form'].visibility="hide";
		    document.layers['htm'].visibility="hide";
		    document.layers['dhtm'].visibility="hide";
		    document.layers['varios'].visibility="hide";
            document.layers['diseno'].visibility="hide";
            document.layers['enlaces'].visibility="hide";
            document.layers['asp2'].visibility="hide";
            document.layers['seguridad2'].visibility="hide";
            document.layers['script2'].visibility="hide";
            document.layers['vbscript2'].visibility="hide";
            document.layers['redes2'].visibility="hide";
            document.layers['cf2'].visibility="hide";
            document.layers['linux2'].visibility="hide";
            document.layers[id].visibility="show";
	    }
	}
    
    
/**
* fin del fichero
*/