/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		return "The date format should be : dd/mm/yyyy"
		//return false
	}
	
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		return "Please enter a valid day"
		//return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		return "Please enter a valid month"
		//return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		return "Please enter a valid 4 digit year between "+minYear+" and "+maxYear
		//return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		return "Please enter a valid date"
		//return false
	}
//return true
return ""
}

function ValidateForm(){
	var dt=document.frmSample.txtDate
	if (isDate(dt.value)==false){
		dt.focus()
		return false
	}
    return true
 }




/********************************
	Form submission functions
********************************/
var msg = '', errmsg = '', focuselement = null, aEmailFields = null, aNumericFields = null, aRequireOneFields = null;

function FilterList(lstFilterBy, strFilters) {
	var lstFilters, lstFiltersFull, i, intStart, objOpt, strFilterBy;
	
	lstFilters = document.getElementById(strFilters);
	lstFiltersFull = document.getElementById(strFilters + '-full');
	
	if (lstFilters && lstFiltersFull) {
		intStart = (lstFilters[0].value == '') ? 1 : 0;

		//Clear list
		lstFilters.selectedIndex = intStart - 1;
		for (var i = lstFilters.length - 1; i >= intStart; i--) {
			lstFilters[i] = null;
		}
	
		//Add filtered items to list
		strFilterBy = lstFilterBy[lstFilterBy.selectedIndex].value;
		
		for (var i = 0; i < lstFiltersFull.length; i++) {
			if (strFilterBy == lstFiltersFull[i].value) {
				objOpt = new Option();
				
				objOpt.text = lstFiltersFull[i].text;
				objOpt.value = lstFiltersFull[i].text;
				
				lstFilters[lstFilters.length] = objOpt;
			}
		}
	}
}

function ShowHideOptionalGroups(lst, strGroup, strType) 
{
	var objGroup, intCurrent, strCurrent;
    if (lst) 
    {
        if (lst.tagName == 'SELECT')
            strCurrent = lst[lst.selectedIndex].value;

        switch(strType) 
        {
            case 'showupto':
                intCurrent = parseInt(strCurrent);

                for (var i = 0; i < lst.length; i++) 
                {
                    if (lst[i].value != '') 
                    {
                    ShowHideGroups(strGroup + lst[i].value, (lst[i].value <= intCurrent));
                    }
                }
                break;

            case 'choose':
                var objSettings;
                //Get settings for this list
                objSettings = document.getElementById(lst.id + 'settings');

                if (objSettings) 
                {
                    var aSettings, blnShow;
                    aSettings = objSettings.value.split('|');
                    //Default show or hide setting
                    blnShow = (aSettings[0] == '1');
                    //Values to show
                    if (aSettings[1].indexOf(strCurrent) >= 0) 
                    {
                        blnShow = true;
                    }
                    //Values to hide
                    if (aSettings[2].indexOf(strCurrent) >= 0) {
                        blnShow = false;
                    }

                    ShowHideGroups(strGroup, blnShow);
                }
                break;

            case 'yesno':
                blnShow = ((lst.value == '1') || (lst.value == 'Yes'));
                ShowHideGroups(strGroup, blnShow);

                break;
        }
    }
}

function ShowHideGroups(strGroupName, blnShow) {
	var objGroup = document.getElementById(strGroupName);
	if (objGroup) {
		objGroup.style.display = (blnShow) ? '' : 'none';
	}
}

function CheckSelection(frm, strType) {
	var objList = frm.productid;
	
	if (objList) {
		if (objList.value == '') {
			alert('Please select a ' + strType + ' first.')
			objList.focus();
			return false;
		}
		if (objList.value == '0') {
			var strNewAction;
			strNewAction = objList[objList.selectedIndex].label;
			if (strNewAction  != '')
				frm.action = strNewAction;
			else
				return false;
		}
	}
	
	return true;
}

function CheckBrochureForm (theform)  
{
    var msg="";
    //	if (theform.orderbrochure.checked==true) msg="Please select a brochure");
    switch (theform.availlist.selectedIndex)  
    {
        case 0: 
            msg=msg+"Please select whether you would like an availability list..\n";
            break;
        
        case 1: 
            if (theform.holidaystart.value=="") msg=msg+"Please choose a holiday start date..\n";
            if (theform.holidaydays.value=="") msg=msg+"Please choose the number of holiday days..\n";
            if (theform.party.value=="") msg=msg+"Please choose the number in the party..\n";
            break;
    }
    
    if (theform.title.value=="") msg=msg+"Please supply your title..\n";
    if (theform.firstname.value=="") msg=msg+"Please supply your first name or initials..\n";
    if (theform.lastname.value=="") msg=msg+"Please supply your surname..\n";
    
    switch (theform.newsletter.selectedIndex)  
    {
        case 1: 
            email=theform.emailaddress.value;
            if (email==""||((email.indexOf("@") == -1)||email.indexOf(".") == -1)) { msg=msg+"Your email address is either missing or in an invalid format..\n"; }
            break;
    }
    if (theform.address1.value=="") msg=msg+"Please supply the first line of your address..\n";
    if (theform.town.value=="") msg=msg+"Please supply your town..\n";
    if (theform.county.value=="") msg=msg+"Please supply your county..\n";
    if (theform.postcode.value=="") msg=msg+"Please supply your postcode..\n";
    
    advert_source=theform.advert_source.selectedIndex;
    
    if (theform.advert_source.selectedIndex==0) msg=msg+"Please tell us how you heard about us..\n";
    if (msg!="")  
    {
        alert("Some details are missing...\n\n"+msg);
        return false;
    }
    else  
    {
        document.getElementById("orderbrochure").action="do-order-brochure1.aspx";
        return true;
    }
}
	
	
	
	
	
	
	
	
	function CheckBrochureFormWS (theform)  {
	var msg="";
//	if (theform.orderbrochure.checked==true) msg="Please select a brochure");
	switch (theform.availlist.selectedIndex)  {
		case 0: msg=msg+"Please select whether you would like an availability list..\n";
				break;
		case 1: if (theform.holidaystart.value=="")
		            {msg=msg+"Please choose a holiday start date..\n";}
//		        else{
//		        var sDateError = isDate(theform.holidaystart.value);
//		            if (sDateError != ""){
//		                msg=msg + sDateError + "\n";
//		            }
//		        }
				if (theform.holidaydays.value=="") {
			    msg=msg+"Please choose the number of holiday days..\n";}
			    else{
			        if (!isInteger(theform.holidaydays.value)){
			            msg=msg+"The number of holiday days must be a number..\n";
			        }
			    }
				    if (theform.party.value=="") {msg=msg+"Please choose the number in the party..\n";}				
				    else{
				        if (!isInteger(theform.party.value)){
				            msg=msg+"The number of adults must be a number..\n";}
				        
				    }
				    
				  if (theform.children.value!="") {
				    
				        if (!isInteger(theform.children.value)){
				            msg=msg+"The number of children must be a number..\n";}
				        
				    }
				    
				     if (theform.babies.value!="") {
				    
				        if (!isInteger(theform.babies.value)){
				            msg=msg+"The number of babies must be a number..\n";}
				        
				    }
				    
				    
				break;
		}
	if (theform.title.value=="") msg=msg+"Please supply your title..\n";
	if (theform.firstname.value=="") msg=msg+"Please supply your first name or initials..\n";
	if (theform.lastname.value=="") msg=msg+"Please supply your surname..\n";
	switch (theform.newsletter.selectedIndex)  {
		case 0: email=theform.emailaddress.value;
			if (email==""||((email.indexOf("@") == -1)||email.indexOf(".") == -1)) { msg=msg+"Your email address is either missing or in an invalid format..\n"; }
			theform.enabled.value = 1;
			break;
		case 1:
            theform.enabled.value = 0;
			break;
		}
	
	theform.EMAIL.value = theform.emailaddress.value;
	if (theform.address1.value=="") msg=msg+"Please supply the first line of your address..\n";
	if (theform.town.value=="") msg=msg+"Please supply your town..\n";
	if (theform.county.value=="") msg=msg+"Please supply your county..\n";
	if (theform.postcode.value=="") msg=msg+"Please supply your postcode..\n";
	advert_source=theform.advert_source.selectedIndex;
	if (theform.advert_source.selectedIndex==0) msg=msg+"Please tell us how you heard about us..\n";
	if (msg!="")  {
		alert("Some details are missing..\n\n"+msg);
		return false;
		}
	else 
	{
	theform.action = document.getElementById('destination').value;
	
	document.getElementById("submit_request").value = "Please wait...";
	document.getElementById("submit_request").disabled = true;
	
	return true;
	}
	}
	
	

function CheckForm(frm) {
	//Loop through form elements, checking for a non-empty value, a selection, or valid email
	// Use the TITLE attribute of the element as the error message, adding for each error
	// Focus is set to the first offending element
	
/*
	if (frm.name=="contactus")   
	{
		document.getElementById("customername").value = document.getElementById("title").value + " " + document.getElementById("firstname").value + " " + document.getElementById("lastname").value;
		var dtToday = new Date();
		var theMonth;
		theMonth = dtToday.getMonth() + 1;
		document.getElementById("takendate").value = theMonth + "/" + dtToday.getDate() + "/" + dtToday.getFullYear();
		frm.action = "do-contact-us1.aspx";

alert("test1:" + document.getElementById("customername").value);
alert("test2:" + document.getElementById("takendate").value);
alert("test3:" + frm.action);

	}
*/
	msg = '';
	errmsg = '';
	focuselement = null;

	//Array of email fields
	var objEmailFields = document.getElementById('emailfields')
	if (objEmailFields) aEmailFields = objEmailFields.value.split(',')

	//Array of numeric fields
	var objNumericFields = document.getElementById('numberfields')
	if (objNumericFields) aNumericFields = objNumericFields.value.split(',')

	//Check each form element
	for (var i = 0; i <= frm.elements.length - 1; i++) {
		CheckElement(frm.elements[i])
	}
	
	// only do if we are ordering a brochure
	docB=document.orderbrochure;
	if (docB!=undefined&&docB.orderbrochure[0].checked==false&&docB.orderbrochure[1].checked==false)   { 	
		msg += "Please select at least One Brochure" + "\n"; 	
		}

	if (msg == '') {
		frm.action = document.getElementById('destination').value;
		frm.submit();
	} else {
		msg = 'You need to complete the form fully before proceeding\n\n' + msg;
		alert(msg);
		if (focuselement && focuselement.focus) focuselement.focus();
	}
	
	return false;	
}

function CheckElement(element) {
	var blnEmailProblem, blnNumericProblem, blnRequireOneProblem, blnVisible;

	blnVisible = ElementVisible(element);

	if (blnVisible) {
		errmsg = element.title;

		//If email field then validate
		blnEmailProblem = false;
		if (element.value != '' && IsElementInArray(element, aEmailFields)) {
			blnEmailProblem = !ValidEmail(element);
			}
		//If numeric field then validate
		blnNumericProblem = false;
		if (element.value != '' && IsElementInArray(element, aNumericFields)) {
			blnNumericProblem = !ValidNumeric(element);
			
			}
		//If require one field
		blnRequireOneProblem = false;
		if (element.value != '' && element.name && element.name.indexOf('requireone-') == 0) {
			blnRequireOneProblem = !ValidRequireOne(element);
			if (blnRequireOneProblem) {
				//Change element to first required field
				element = document.getElementById(aRequireOneFields[1]);
				}
			}

		switch (element.name)  {
			case "advert_source": selval=element.selectedIndex;
								  if (selval==0)   {  msg += errmsg + '\n';   }
								  break;
			case "brochure": if (element.selectedIndex==0)   {  msg += errmsg + '\n';   }
							 break;
//			case "newsletter": if (element.selectedIndex==0)   {  msg += errmsg + '\n';   }
//							 break;
			//If there were problems then show message and set focus to first problem
			default: if ( blnEmailProblem || blnNumericProblem || blnRequireOneProblem || (element.title != '' && element.value == '') ) {
						msg += errmsg + '\n';
						if (!focuselement) focuselement = element;
						}
			}
		}
	}

function ElementVisible(element) {
	var objElement = element;
	while (objElement) {
		if (objElement.style && objElement.style.display == 'none') return false;
		if (objElement.tagName == 'FORM') break;
		objElement = objElement.parentNode;
	}
	
	return true;
}

function IsElementInArray(element, aFields) {
	if (aFields) {
		for (var i = 0; i < aFields.length; i++) {
			if (element.name == aFields[i]) {
				return true;
			}
		}
	}

	return false;
}

function GetLabel(element) {
	var aLabels, objLabel;
	
	aLabels = document.getElementsByTagName('LABEL');
	
	for (var i = 0; i < aLabels.length; i++) {
		objLabel = aLabels[i];
		if (objLabel.htmlFor == element.id) {
			return objLabel;
		}
	}
	
	return null;
}

function ValidEmail(element) {
	var valid, strFor, re = /^[a-z0-9_-]+(\.[a-z0-9_-]+)*@[a-z0-9_-]+(\.[a-z0-9_-]+)+$/ig;
	valid = re.test(element.value);
	if (!valid) {
		objLabel = GetLabel(element);
		if (objLabel) strFor = ' for ' + objLabel.childNodes[0].nodeValue;
		errmsg = 'Please enter a valid value' + strFor;
	}
	return valid;
}

function ValidNumeric(element) {
	var valid, strFor, re = /^[-+]?[0-9]+([.][0-9]*)?$/ig;
	//valid = re.test(element.value);
	valid = isInteger(element.value);
	if (!valid) {
		objLabel = GetLabel(element);
		if (objLabel) strFor = ' for ' + objLabel.childNodes[0].nodeValue;
		errmsg = 'Please enter a numeric value' + strFor;
	}
	return valid;
}

function ValidRequireOne(element) {
	var valid, strFor, objField;
	
	valid = false;
	
	aRequireOneFields = element.value.split(',');
	for (var i = 1; i < aRequireOneFields.length; i++) {
		objField = document.getElementById(aRequireOneFields[i]);
		
		if (objField) {
			switch (objField.type) {
			case 'checkbox':
				valid = objField.checked;
				break;
			default:
				valid = objField.value != '';
				break;
			}
			
		}
		
		//Quit loop early if valid
		if (valid) break;
	}
	
	if (!valid) {
		//strFor = element.name.replace('requireone-', '');
		strFor = aRequireOneFields[0];
		errmsg = 'At least one is required: ' + strFor;
	}
	return valid;
}