// This set of function are general includes for validation
// They are designed in pairs the validation and the event function
// the event function will call the validation with the event src

function display_name(item) {
	var strDisplay = item.getAttribute("DisplayName");
	if (strDisplay==null || strDisplay=="")
		strDisplay="Field";
	return strDisplay;
}

function default_value(item) {
	var strDefault = item.defaultValue;
	
	if (strDefault==null || strDefault=="")
	{
		strDefault="";
	}
		
	return strDefault;
}

function trim_string() {
	var ichar, icount;
	var strValue = this;
	ichar = strValue.length - 1;
	icount = -1;
	while (strValue.charAt(ichar)==' ' && ichar > icount)
		--ichar;
	if (ichar!=(strValue.length-1))
		strValue = strValue.slice(0,ichar+1);
	ichar = 0;
	icount = strValue.length - 1;
	while (strValue.charAt(ichar)==' ' && ichar < icount)
		++ichar;
	if (ichar!=0)
		strValue = strValue.slice(ichar,strValue.length);
	return strValue;
}

function date_toSimpleForm() {
	var toSimpleForm = new String;
	toSimpleForm = this.toLocaleString();
	toSimpleForm = toSimpleForm.substring(0,toSimpleForm.indexOf(' '));
	return toSimpleForm;
}


function es_non_blank() {
	var item = event.srcElement;
	event.returnValue = vs_non_blank(item);
}

function vs_non_blank(item,DisplayName) {
	var strErrorMsg = DisplayName + " no puede estar en blanco.";
	item.value=item.value.Trim();
	if (item.value.length==0) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}


function es_valid_number() {
	var item = event.srcElement;
	event.returnValue = vs_valid_number(item);
}

function vs_valid_number(item,DisplayName) {
	var strErrorMsg = DisplayName + " debe ser un valor numérico.";
	var strDefault = default_value(item);
	if (strDefault.length==0) 
	{
		strDefault="0";
	}
	
	item.value=item.value.Trim();
	
	if (item.value.length==0)
		item.value=strDefault;
	var num = ".0123456789";
	for (var intLoop = 0; intLoop < item.value.length; intLoop++) {
		if (num.indexOf(item.value.charAt(intLoop)) == -1) {
			item.focus();
			alert(strErrorMsg);
			return false;
		}
	}
	if (item.value.indexOf(".")!=item.value.lastIndexOf(".")) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_valid_hours() {
	var item = event.srcElement;
	event.returnValue = vs_valid_hours(item);
}

function vs_valid_hours(item,DisplayName) {
	var strErrorMsg = DisplayName;
	var itemValue=item.value
	var time
	var hours = new Object(item)
	var minutes = new Object(item)
	 	
	if (itemValue.indexOf(":")==-1) 
	{
		item.focus();
		alert(strErrorMsg + " debe ser un valor correcto.");
		return false;
	}
	else
	{					
		time = itemValue.split(":")
				
		hours.value=new String(time[0]);		
	
		if (!vs_valid_number(hours,DisplayName))
		{
			item.value=time[0] + ":" + time[1];
			return false;
		}
		
		minutes.value=new String(time[1]);		
		
		if (!vs_valid_number(minutes,DisplayName))
		{
			item.value=time[0] + ":" + time[1];
			return false;
		}
				
		if ((parseInt(time[0]) < 0 || parseInt(time[0]) > 23)) 
		{
			item.value=time[0] + ":" + time[1];
			item.focus();
			alert(strErrorMsg + " debe tener un valor entre 0 y 23 horas.");
			return false;
		}
		
		if (parseInt(time[1])<0 || parseInt(time[1])>59) 
		{
			item.value=time[0] + ":" + time[1];
			item.focus();
			alert(strErrorMsg + " debe ser un valor entre 0 y 59 minutos.");
			return false;
		}
	}
	item.value=time[0] + ":" + time[1];
	return true;	
}


function es_valid_date() {
	var item = event.srcElement;
	event.returnValue = vs_valid_date(item);
}

/*
function vs_valid_date(item,DisplayName) {
	var strErrorMsg = DisplayName;
	if (isNaN(Date.parse(item.value))) {
		item.focus();
		alert(strErrorMsg + " debe ser valor de fecha correcto.");
		return false;
	}
	//var dtItem = new Date(Date.parse(item.value));
	//item.value = dtItem.toSimpleForm();
	return true;
}
*/

var mesos = new Array(31,29,31,30,31,30,31,31,30,31,30,31)

function vs_valid_date(item,DisplayName) 
{
	var strErrorMsg = DisplayName;
	var in_date = item.value.Trim();
    in_date = in_date.toUpperCase();
    var date_is_bad = 0;
    if (!allowInString(in_date,"/0123456789"))
	{
		date_is_bad = 1;
		alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
		item.focus();
		return false
	}

    if (!date_is_bad) 
	{
        var date_pieces = new Array();
        date_pieces = in_date.split("/");
        if (date_pieces.length == 2) {
            var d = new Date();
            in_date = in_date + "/" + get_full_year(d);
            date_pieces = in_date.split("/");
        }
        
		if (date_pieces.length != 3 || parseInt(date_pieces[1],10) < 1 || parseInt(date_pieces[1],10) > 12){
			alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
			item.focus();
			return false
		}
		else
			{
			var mes = parseInt(date_pieces[1],10)
			if ((parseInt(date_pieces[0],10) < 1 || parseInt(date_pieces[0],10) > mesos[mes-1])){
				alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
				item.focus();
				return false
			}
			if (mes == 2)
			{ 
				if ( (!Math.abs(parseInt(date_pieces[2]) - 2000)%4 == 0) && (parseInt(date_pieces[0]) > 28))
				{
				alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
				item.focus();
				return false
				}
			}
		}

		if (date_pieces[0].length != 2 || date_pieces[1].length != 2 || date_pieces[2].length != 4)
		{
			alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
			item.focus();
			return false
		}
		if (parseInt(date_pieces[2]) < 1970){
			alert(strErrorMsg + " debe ser valor de fecha correcto (DD/MM/AAAA).");
			item.focus();
			return false
		}
    }
    return true;
}


function get_full_year(d) 
{
    var y = d.getYear();

    if (y > 69  && y < 100) y += 1900;
    if (y < 1000) y += 2000;
    return y;
}

function allowInString (InString, RefString)
{
	if(InString.length==0) return (false);

	for (var Count=0; Count < InString.length; Count++)
	{
		var TempChar= InString.substring (Count, Count+1);
		if (RefString.indexOf (TempChar, 0)==-1)
		{
        		return (false);
        	}
	}
	return true
}


function es_item_selected() {
	var item = event.srcElement;
	event.returnValue = vs_item_selected(item);
}

function vs_item_selected(item,DisplayName) {
	var strErrorMsg = DisplayName + " debe tener algún elemento seleccionado.";
	if (item.selectedIndex==0) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function vs_item_checked(item,DisplayName)
{
	var bChecked=false;
	var i=0;	
	var strErrorMsg = DisplayName + " debe tener algún elemento seleccionado.";	
	if (item.length!=0)
	{
		for(i=0;i<item.length;i++)
		{	
			bChecked=(bChecked || item[i].checked);
		}
		
		if (!bChecked)
		{
			alert(strErrorMsg);
			item[0].focus();			
		}
		
	}
	else
	{	
		
		bChecked=item.checked;
		if (!bChecked)
		{
			alert(strErrorMsg);		
			item.focus();			
		}
	}
	
	return bChecked;
}

function es_valid_zip() {
	var item = event.srcElement;
	event.returnValue = vs_valid_zip(item);
}

function vs_valid_zip(item) {
	var strErrorMsg = display_name(item) + " debe tener el formato 99999-9999.";
	item.value=item.value.Trim();
	if (!(/^\d{5}$/.test(item.value) || /^\d{5}-\d{4}$/.test(item.value))) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_valid_ssnbr() {
	var item = event.srcElement;
	event.returnValue = vs_valid_ssnbr(item);
}

function vs_valid_ssnbr(item,DisplayName) {
	var strErrorMsg = DisplayName + " solo acepta números,espacios y paréntesis.";
	item.value=item.value.Trim();
	if (!(/^[\d\s(\d)]+$/.test(item.value))) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function es_valid_email() {
	var item = event.srcElement;
	event.returnValue = vs_valid_email(item);
}

function vs_valid_email(item,DisplayName) {
	var strErrorMsg = DisplayName + " no tiene un formato correcto.";
	item.value=item.value.Trim();
	if (!(/^.+@{1}.+$/.test(item.value))) {
		item.focus();
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function vs_confirmation(item,item2,DisplayName) 
{
	var strErrorMsg = "Comprueba el valor del " + DisplayName + ".";
	item.value=item.value.Trim();
	item2.value=item2.value.Trim();
	if (item.value != item2.value) 
	{
		item.focus();
		item2.value="";
		alert(strErrorMsg);
		return false;
	}
	return true;
}

function vs_validLength(item,begin,end,DisplayName) 
{
	var strErrorMsg = "El valor del " + DisplayName + " debe estar entre "
		strErrorMsg += begin + " y " + end + " carácteres.";
	var length = 0;	
	
	length=item.value.Trim().length;	
	
	if (length<begin || length>end) 
	{
		item.focus();		
		alert(strErrorMsg);
		return false;
	}
	return true;
}

// build the validation object
function validation_setup() {
	this.eventNonBlank = es_non_blank;
	this.nonBlank = vs_non_blank;
	this.eventValidNumber = es_valid_number;
	this.validNumber = vs_valid_number;
	this.eventValidHours = es_valid_hours;
	this.validTime = vs_valid_hours;
	this.eventValidDate = es_valid_date;
	this.validDate = vs_valid_date;
	this.eventItemSelected = es_item_selected;
	this.itemSelected = vs_item_selected;
	this.itemChecked = vs_item_checked;
	this.eventValidZip = es_valid_zip;
	this.validZip = vs_valid_zip;
	this.eventValidSSNbr = es_valid_ssnbr;
	this.validTelephone = vs_valid_ssnbr;
	this.eventValidEmail = es_valid_email;
	this.validEmail = vs_valid_email;
	this.confirmation = vs_confirmation;
	this.validLength = vs_validLength;
	return this;
}

// Extend the string object to include a trim function
String.prototype.Trim = trim_string;
// Extend the date object to include a simple form string conversion
Date.prototype.toSimpleForm = date_toSimpleForm;

// Construct the validation object
var validation = new Object;
validation = validation_setup();


// This set of function are for processing the key press event
// Used to restrict input on numerics and pure textual fields

function kp_integer() {
	if ((event.keyCode < 48 || event.keyCode > 57))
		event.returnValue = false;
}
function kp_numeric() {
	if ((event.keyCode != 46) && (event.keyCode < 48 || event.keyCode > 57))
		event.returnValue = false;
	if (event.keyCode == 46) {
		if (event.srcElement.value.indexOf(".") > -1)
			event.returnValue = false;
	}
}


function kp_character() {
	if ((event.keyCode < 65 || event.keyCode > 90) && (event.keyCode < 97 || event.keyCode > 122))
		event.returnValue = false;
}
function kp_convert_upper() {
	if ((event.keyCode >= 97 && event.keyCode <= 122))
		event.keyCode -= 32;
}
function kp_convert_lower() {
	if ((event.keyCode >= 65 && event.keyCode <= 90))
		event.keyCode += 32;
}


function kp_setup() {
	this.Integer = kp_integer;
	this.Numeric = kp_numeric;
	this.Character = kp_character;
	this.ConvertUpper = kp_convert_upper;
	this.ConvertLower = kp_convert_lower;
	return this;
}

//var crlf = String.fromCharCode(13, 10);
var keyPressInput = new Object;
keyPressInput = kp_setup();