var MensajeCamposOblig = 'Fields marked with * must be filled obligatory';
var MensajeUnCampo = 'At least one field must be filled obligatory';
var MensajeEMailNoValido = 'The email address is not valid';
var MensajeContactoMail = 'To contact you by email you must fill in the field E-Mail'
var MensajeContactoTelefono = 'To contact you by phone you must fill in the field Phone number'
var MensajeContactoDireccion = 'To contact you by post you must fill in the fields Address, ZIP/Post Code and Nationality'
  
//*******************************************************************************
// 

function ValidaLongTextArea(texto, numCar) {
	textoInicio = texto.value	
	if (textoInicio.length >= numCar) {
		texto.value = textoInicio.substring (0, numCar);
	}	
}

//**************************************************************************
//
function openWin (url, name, wi, he) {
	var izq = (screen.width - wi) / 2;
	window.open(url,name,'status=no,scrollbars=yes,top=50,left=' + izq + ',width=' + wi + ',height=' + he);
}

//**************************************************************************
// Sólo números en caja de texto
// UTILIZACIÓN:
// NO permite decimales --> onkeypress="onlyDigits(event,'noDec')"
// SI permite decimales	--> onkeypress="onlyDigits(event,'decOK')"
var isIE = document.all?true:false;
var isNS = document.layers?true:false;
function onlyDigits(e,decReq) {
var key = (isIE) ? window.event.keyCode : e.which;
var obj = (isIE) ? event.srcElement : e.target;
var isNum = (key > 47 && key < 58) ? true:false;
var dotOK = (key==46 && decReq=='decOK' && (obj.value.indexOf(".")<0 || obj.value.length==0)) ? true:false;
window.event.keyCode = (!isNum && !dotOK && isIE) ? 0:key;
e.which = (!isNum && !dotOK && isNS) ? 0:key;
return (isNum || dotOK);
}

//**************************************************************************
// 
function isDate(dateStr) {
var datePat = /^(\d{1,2})(\/|-)(\d{1,2})(\/|-)(\d{4})$/;
var matchArray = dateStr.match(datePat); // is the format ok?

if (matchArray == null) {
//alert("Please enter your birth date as dd/mm/yyyy. Your current selection reads: " + dateStr);
return false;
}

day = matchArray[1]; // p@rse date into variables
month = matchArray[3];
year = matchArray[5];

if (month < 1 || month > 12) { // check month range
//alert("Month must be between 1 and 12.");
return false;
}

if (day < 1 || day > 31) {
//alert("Day must be between 1 and 31.");
return false;
}

if ((month==4 || month==6 || month==9 || month==11) && day==31) {
//alert("Month "+month+" doesn`t have 31 days!");
return false;
}

if (month == 2) { // check for february 29th
var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
if (day > 29 || (day==29 && !isleap)) {
//alert("February " + year + " doesn`t have " + day + " days!");
return false;
}
}
return true; // date is valid
}

function checkForValidDate(){
var ddlVMonth = document.getElementById("_ctl0_DropDownListMaanden");
var ddlVDay = document.getElementById("_ctl0_DropDownListDagen");
var ddlVYear = document.getElementById("_ctl0_DropDownListJaren");

if (!isDate(ddlVDay.value + '/' + ddlVMonth.value + '/' + ddlVYear.value))
{ return(false); }

return(true);
}