// autor ... http://personal-de-jall.webcindario.com
// contacto ... ja_lopezl@yahoo.es
// estas dos variables se pueden modificar para
// adaptarlas a sus necesidades
//fecha de referencia del contador: fin del año 2008
var futuro = new Date(2014, 12, 31, 23, 60);
//actualiza el contador cada 4 segundos ( = 4000 milisegundos)
var actualiza = 1000;
// función que calcula y escribe el tiempo en días, horas, minutos y segundos
// que faltan para la variable futuro
function faltan() {
var ahora = new Date();
var faltan = futuro - ahora;
// si todavís no es futuro
if (faltan > 0) {
var segundos = Math.round(faltan / 1000);
var minutos = Math.floor(segundos / 60);
var segundos_s = segundos % 60;
var horas = Math.floor(minutos / 60);
var minutos_s = minutos % 60;
var dias = Math.floor(horas / 24);
var horas_s = horas % 24;
// escribe los resultados
(segundos_s < 10) ? segundos_s = "0" + segundos_s : segundos_s = segundos_s;
(minutos_s < 10) ? minutos_s = "0" + minutos_s : minutos_s = minutos_s;
(horas_s < 10) ? horas_s = "0" + horas_s : horas_s = horas_s;
(dias < 10) ? dias = "0" + dias : dias = dias;
var resultado = dias + " dias : " + horas_s + " horas : " + minutos_s + " minutos : " + segundos_s + " segundos";
document.formulario.reloj.value = resultado;
//actualiza el contador
setTimeout("faltan()", actualiza);
}
// estamos en el futuro
else {
document.formulario.reloj.value = "00 dias : 00 horas : 00 minutos : 00 segundos";
}
}
faltan();
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