// JavaScript Document

function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
	var emailPat=/^(.+)@(.+)$/
	/* The following string represents the pattern for matching all special
		characters.  We don't want to allow special characters in the address. 
		These characters include ( ) < > @ , ; : \ " . [ ]    */
	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
	/* The following string represents the range of characters allowed in a 
		username or domainname.  It really states which chars aren't allowed. */
	var validChars="\[^\\s" + specialChars + "\]"
	/* The following pattern applies if the "user" is a quoted string (in
		which case, there are no rules about which characters are allowed
		and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
		is a legal e-mail address. */
	var quotedUser="(\"[^\"]*\")"
	/* The following pattern applies for domains that are IP addresses,
		rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
		e-mail address. NOTE: The square brackets are required. */
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
	/* The following string represents an atom (basically a series of
		non-special characters.) */
	var atom=validChars + '+'
	/* The following string represents one word in the typical username.
		For example, in john.doe@somewhere.com, john and doe are words.
		Basically, a word is either an atom or quoted string. */
	var word="(" + atom + "|" + quotedUser + ")"
	// The following pattern describes the structure of the user
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
	/* The following pattern describes the structure of a normal symbolic
		domain, as opposed to ipDomainPat, shown above. */
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
	
	
	/* Finally, let's start trying to figure out if the supplied address is
		valid. */
	
	/* Begin with the coarse pattern to simply break up user@domain into
		different pieces that are easy to analyze. */
	var matchArray=emailStr.match(emailPat)
	if (matchArray==null) {
	  /* Too many/few @'s or something; basically, this address doesn't
		  even fit the general mould of a valid e-mail address. */
		//alert("Email address seems incorrect (check @ and .'s)")
		return false
	}
	var user=matchArray[1]
	var domain=matchArray[2]
	
	// See if "user" is valid 
	if (user.match(userPat)==null) {
		 // user is not valid
		 //alert("The username doesn't seem to be valid.")
		 return false
	}
	
	/* if the e-mail address is at an IP address (as opposed to a symbolic
		host name) make sure the IP address is valid. */
	var IPArray=domain.match(ipDomainPat)
	if (IPArray!=null) {
		 // this is an IP address
		  for (var i=1;i<=4;i++) {
			 if (IPArray[i]>255) {
				 //alert("Destination IP address is invalid!")
				 return false
			 }
		 }
		 return true
	}
	
	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		//alert("The domain name doesn't seem to be valid.")
		return false
	}
	
	/* domain name seems valid, but now make sure that it ends in a
		three-letter word (like com, edu, gov) or a two-letter word,
		representing country (uk, nl), and that there's a hostname preceding 
		the domain or country. */
	
	/* Now we need to break up the domain to get a count of how many atoms
		it consists of. */
	var atomPat=new RegExp(atom,"g")
	var domArr=domain.match(atomPat)
	var len=domArr.length
	if (domArr[domArr.length-1].length<2 || 
		 domArr[domArr.length-1].length>3) {
		// the address must end in a two letter or three letter word.
		//alert("The address must end in a three-letter domain, or two letter country.")
		return false
	}
	
	// Make sure there's a host name preceding the domain.
	if (len<2) {
		var errStr="This address is missing a hostname!"
		//alert(errStr)
		return false
	}
	
	// If we've gotten this far, everything's valid!
	return true;
}

function checkContacto(){
	if (nombrecont.value==''){
      alert('Debe ingresar su nombre');
		nombrecont.focus();
		return false;
	}
	if (apellidocont.value==''){
      alert('Debe ingresar su apellido');
		apellidocont.focus();
		return false;
	}
	if (emailcont.value==''){
		alert('Debe ingresar su email');
		emailcont.focus();
		return false;
	}else{
	   if (!emailCheck(emailcont.value)){
		   alert('Su email es inválido');
			emailcont.focus();
			return false;
		}
	}
	if (telefonocont.value==''){
      alert('Debe ingresar su teléfono');
		telefonocont.focus();
		return false;
	}
	if (direccioncont.value==''){
      alert('Debe ingresar su dirección');
		direccioncont.focus();
		return false;
	}
	if (codpostalcont.value==''){
      alert('Debe ingresar su código postal');
		codpostalcont.focus();
		return false;
	}
	if (comentariocont.value==''){
      alert('Debe ingresar su comentario');
		comentariocont.focus();
		return false;
	}
	return true;
}

function checkDatosInscripcion(){
	if (nombre_insc.value==''){
      alert('Debe ingresar su nombre');
		nombre_insc.focus();
		return false;
	}
	if (nrodoc_insc.value==''){
		alert('Debe ingresar su número de documento');
		nrodoc_insc.focus();
		return false;
	}else{
		if (!IsNumeric(nrodoc_insc.value)){
			alert('Su número de documento es inválido');
			nrodoc_insc.focus();
			return false;			
		}
	}
	if (telefono_insc.value==''){
		alert('Debe ingresar su teléfono');
		telefono_insc.focus();
		return false;
	}
	if (email_insc.value==''){
		alert('Debe ingresar su email');
		email_insc.focus();
		return false;
	}else{
	   if (!emailCheck(email_insc.value)){
		   alert('Su email es inválido');
			email_insc.focus();
			return false;
		}
	}
	if (ciudad_insc.value==''){
      alert('Debe ingresar su ciudad');
		ciudad_insc.focus();
		return false;
	}
	if (direccion_insc.value==''){
		alert('Debe ingresar su dirección');
		direccion_insc.focus();
		return false;
	}
	if (codpostal_insc.value==''){
		alert('Debe ingresar su código postal');
		codpostal_insc.focus();
		return false;
	}
	return true;
}

function checkDatosInscripcionPop(){

	if (frm_inscripcion.nombre_pinsc.value==''){
      alert('Debe ingresar su nombre');
		frm_inscripcion.nombre_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.compania_pinsc.value==''){
		alert('Debe ingresar el nombre de su compañia');
		frm_inscripcion.compania_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.cuit_pinsc.value==''){
		alert('Debe ingresar el CUIT');
		frm_inscripcion.cuit_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.email_pinsc.value==''){
		alert('Debe ingresar su email');
		frm_inscripcion.email_pinsc.focus();
		return false;
	}else{
	   if (!emailCheck(frm_inscripcion.email_pinsc.value)){
		   alert('Su email es inválido');
			frm_inscripcion.email_pinsc.focus();
			return false;
		}
	}
	if (frm_inscripcion.telefono_pinsc.value==''){
		alert('Debe ingresar su teléfono');
		frm_inscripcion.telefono_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.ciudad_pinsc.value==''){
      alert('Debe ingresar su ciudad');
		frm_inscripcion.ciudad_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.direccion_pinsc.value==''){
		alert('Debe ingresar su dirección');
		frm_inscripcion.direccion_pinsc.focus();
		return false;
	}
	if (frm_inscripcion.codpostal_pinsc.value==''){
		alert('Debe ingresar su código postal');
		frm_inscripcion.codpostal_pinsc.focus();
		return false;
	}
	return true;
}

function checkDatos(){
	if (user_name.value==''){
      alert('Debe ingresar su nombre');
		user_name.focus();
		return false;
	}
	if (user_email.value==''){
		alert('Debe ingresar su email');
		user_email.focus();
		return false;
	}else{
	   if (!emailCheck(user_email.value)){
		   alert('Su email es inválido');
			user_email.focus();
			return false;
		}
	}
	if (friend_name.value==''){
		alert('Debe ingresar el nombre de su amigo');
		friend_name.focus();
		return false;
	}
	if (friend_email.value==''){
		alert('Debe ingresar el email de su amigo');
		friend_email.focus();
		return false;
	}else{
	   if (!emailCheck(friend_email.value)){
		   alert('El email de su amigo es inválido');
			friend_email.focus();
			return false;
		}
	}
	return true;
}

function IsNumeric(sText){
var ValidChars = "0123456789.";
var IsNumber=true;
var Char;

	for (i = 0; i < sText.length && IsNumber == true; i++){ 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1){
         IsNumber = false;
      }
   }
   return IsNumber;
}