function eliminarObjeto(id,decremento,vel){
	object=document.getElementById(id);
	if(object!=null){
		object.style.opacity=1;
		setTimeout("eliminandoObjeto(\'"+id+"\',"+decremento+","+vel+")",parseInt(vel));
	}
}

function eliminandoObjeto(id,decremento,vel){
	object=document.getElementById(id);
	if(object!=null){
		object.style.opacity=parseFloat(object.style.opacity)-parseFloat(decremento);
		if (parseFloat(object.style.opacity) >0 ){
			setTimeout("eliminandoObjeto(\'"+id+"\',"+decremento+","+vel+")",parseInt(vel));
		}else{
			object.parentNode.removeChild(object);
		}
	}
}

function validarEmail(campo){
	var email = campo.value;
	var filtro=/^[A-Za-z][A-Za-z0-9_]*@[A-Za-z0-9_]+\.[A-Za-z0-9_.]+[A-za-z]$/;
	if(email.length==0){
		return true;
	}
	if(filtro.test(email)){
		return true;
	}
	return false;
}