function cambiarClase(idCapa, clase){
	document.getElementById(idCapa).className = clase;
}

function verFondoMenuSup(ver,clase){
	//alert(document.getElementById("fondoMenuSuperior").style.display);
	if(ver==true)
		document.getElementById(clase).style.display = "block";
	else
		document.getElementById(clase).style.display = "none";
}

function enlace(direccion){
	document.location.href = direccion;
}

function LP_data(e){
	//var key=window.event.keyCode;//codigo de tecla.
	var key = (document.all) ? e.keyCode : e.which;
	if (key < 44 || key > 57){//si no es numero 
	window.event.keyCode=0;//anula la entrada de texto.
	}
}

function validarNumero(e) { // 1
    tecla = (document.all) ? e.keyCode : e.which; // 2
    if (tecla==8) return true; // 3
    if (tecla==0) return true;
    patron =/[0-9.,]/; // 4
    te = String.fromCharCode(tecla); // 5
    return patron.test(te); // 6
} 

		function abrirventana(url,width, height,nombre)
			{
			if(document.all)
				{
				izq = (screen.availWidth) ? (screen.availWidth-width)/2 : 0;
				alt = (screen.availHeight) ? (screen.availHeight-height)/2 : 0;
			}else{
				izq = (screen.width) ? (screen.width-width)/2 : 0;
				alt = (screen.height) ? (screen.height-height)/2 : 0;
			}

			popup = window.open(url, nombre, "titlebar=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,left=" + izq + ",top=" + alt + ",width=" + width + ",height=" + height);
			popup.focus();
		}