// JavaScript Document

var agt = navigator.userAgent.toLowerCase();
var is_op = (agt.indexOf("opera") != -1);
var is_ie = (agt.indexOf("msie") != -1) && document.all && !is_op;
var is_ie5 = (agt.indexOf("msie 5") != -1) && document.all && !is_op;
var is_mac = (agt.indexOf("mac") != -1);
var is_gk = (agt.indexOf("gecko") != -1);
var is_sf = (agt.indexOf("safari") != -1);

function imprimir()
{
	bV = parseInt(navigator.appVersion);
	if (bV >= 4) window.print();
}

function formulariocompleto(Formulario)
{
	var i=0;
	while (i < document.forms[Formulario].elements.length)
	{
		if (document.forms[Formulario].elements[i].value=='')
		{ 
			alert('Por favor rellene todos los datos');
			document.forms[Formulario].elements[i].focus();
			return false;
		}
		i ++;
	}
	return true;
}

function IsEmpty(s)
{
	var whitespace = " \t\n\r";
	var i;

	if(s.length == 0)
	{
		return true;
	}
	
	for (i = 0; i < s.length; i++)
	{
		var c = s.charAt(i);

		if (whitespace.indexOf(c) == -1)
		{
			return false;
		}
	}
	return true;
}

function IsEmail(_email)
{
     var emailReg = /^[a-z][a-z-_0-9\.]+@[a-z-_=>0-9\.]+\.[a-z]{2,3}$/i
     return emailReg.test(_email);
}


function AbreImagen(UrlImagen)
{
	window.open("imagen_popup.php?img=" + UrlImagen, "imagen" + Math.floor(Math.random()*11),"width=1000,height=1000,scrollbars=no,titlebar=no,status=no,toolbar=no,menubar=no,location=no,resizable=yes");
}

function MostrarOcultar(item) {
	var obj_layer = document.getElementById(item);

	if (obj_layer.style.display == "none"){
		obj_layer.style.display = "inline";
	}else{
		obj_layer.style.display = "none";
	}
}