// JavaScript Document
//var nav4 = window.Event ? true : false;
var isNS4 = (navigator.appName=="Netscape")?1:0;

function acceptNum(evt){
	// NOTE: Backspace = 8, Enter = 13, '0' = 48, '9' = 57
	var key = nav4 ? evt.which : evt.keyCode;
//	alert(key);
	return (key <= 13 || (key >= 48 && key <= 57) || key == 46);
}

function muestra_capa(id){
	document.getElementById(id).style.display = '';
}
function esconde_capa(id){
	document.getElementById(id).style.display = 'none';
}
function submitenter(myfield,e){
	var keycode;
	if (window.event) keycode = window.event.keyCode;
	else if (e) keycode = e.which;
	else return true;

	if (keycode == 13){
		myfield.form.submit();
		return false;
	}else
		return true;
}

function codifica_acentos(cadena){
		cadena = cadena.replace("á", "&aacute;");
		cadena = cadena.replace("é", "&eacute;");
		cadena = cadena.replace("í", "&iacute;");
		cadena = cadena.replace("ó", "&oacute;");
		cadena = cadena.replace("ú", "&uacute;");
		cadena = cadena.replace("à", "&agrave;");
		cadena = cadena.replace("è", "&egrave;");
		cadena = cadena.replace("ì", "&igrave;");
		cadena = cadena.replace("ò", "&ograve;");
		cadena = cadena.replace("ù", "&ugrave;");

		cadena = cadena.replace("Á", "&Aacute;");
		cadena = cadena.replace("É", "&Eacute;");
		cadena = cadena.replace("Í", "&Iacute;");
		cadena = cadena.replace("Ó", "&Oacute;");
		cadena = cadena.replace("Ú", "&Uacute;");
		cadena = cadena.replace("À", "&Agrave;");
		cadena = cadena.replace("È", "&Egrave;");
		cadena = cadena.replace("Ì", "&Igrave;");
		cadena = cadena.replace("Ò", "&Ograve;");
		cadena = cadena.replace("Ù", "&Ugrave;");

		cadena = cadena.replace("ñ", "&ntilde;");
		cadena = cadena.replace("Ñ", "&Ntilde;");

		return cadena;
	}

function clickLogin(form_name){
	document.getElementById("accion").value = "login";
	document.getElementById(form_name).submit();
}


function clickGuardar(form_name){
	document.getElementById("accion").value = "guardar";
	document.getElementById(form_name).submit();
}

function clickCancelar(url){
	if(confirm("¿Desea cancelar los cambios?")){
		location.href = url;
	}else{
		return false;
	}
}

function clickBorrar(form_name){
	if(confirm("¿Desea borrar los registros seleccionados?")){
		document.getElementById("accion").value = "borrar";
		document.getElementById(form_name).submit();
	}else{
		return false;
	}
}

function seleccionar_todo(form_name){
	for (i=0; i<document.forms[form_name].elements.length; i++) {
		if(document.forms[form_name].elements[i].type == "checkbox"){
			document.forms[form_name].elements[i].checked=1;
		}
	}
}

function deseleccionar_todo(form_name){
	for (i=0; i<document.forms[form_name].elements.length; i++){
		if(document.forms[form_name].elements[i].type == "checkbox"){
			document.forms[form_name].elements[i].checked=0;
		}
	}
}