timeDifference = function(startDate, endDate) {
	
	date2 = startDate;
	date1 = endDate;
	
	laterdate = date1.split("-");
	laterD = laterdate[0];
	laterM = laterdate[1];
	laterY = laterdate[2];
	
	earlierdate = date2.split("-");
	earlierD = earlierdate[0];
	earlierM = earlierdate[1];
	earlierY = earlierdate[2];
	
	var laterdate = new Date(laterY,laterM,laterD);
	var earlierdate = new Date(earlierY,earlierM,earlierD);
	
	var difference = laterdate.getTime() - earlierdate.getTime();
	
	var daysDifference = Math.floor(difference / 1000 / 60/ 60 / 24);
	difference -= daysDifference * 1000 * 60 * 60 * 24
	var hoursDifference = Math.floor(difference / 1000 / 60 / 60);
	difference -= hoursDifference * 1000 * 60 * 60
	var minutesDifference = Math.floor(difference / 1000 / 60);
	difference -= minutesDifference * 1000 * 60
	var secondsDifference = Math.floor(difference / 1000);
	
	return daysDifference;

}
function echeck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   //alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   //alert("Invalid E-mail ID")
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		//alert("Invalid E-mail ID")
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		//alert("Invalid E-mail ID")
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }

	 return true					
}

function validateEnquire() {
		
		// enquire_type
		if (document.getElementById("enquire_type").value == 'select') {
			alert("Please select an enquire type.");
			document.getElementById("enquire_type_label").style.color = "red";
			document.getElementById("enquire_type").focus();
			return false;
		} else {
			document.getElementById("enquire_type_label").style.color = "black";
		}
		
		// title
		if (document.getElementById("title").value == 'select') {
			alert("Please select a title.");
			document.getElementById("title_label").style.color = "red";
			document.getElementById("title").focus();
			return false;
		} else {
			document.getElementById("title_label").style.color = "black";
		}
		
		// first_name
		if (document.getElementById("first_name").value.length < 1) {
			alert("Please enter a valid first name.");
			document.getElementById("first_name_label").style.color = "red";
			document.getElementById("first_name").focus();
			return false;
		} else {
			document.getElementById("first_name_label").style.color = "black";
		}
		
		// last_name
		if (document.getElementById("last_name").value.length < 1) {
			alert("Please enter a valid last name.");
			document.getElementById("last_name_label").style.color = "red";
			document.getElementById("last_name").focus();
			return false;
		} else {
			document.getElementById("last_name_label").style.color = "black";
		}
		
		// email_1 (validate)
		if (echeck(document.getElementById("email_1").value) == false) {
			alert("Please enter a valid email address.");
			document.getElementById("email_1_label").style.color = "red";
			document.getElementById("email_1").focus();
			return false;
		} else {
			document.getElementById("email_1_label").style.color = "black";
		}
		
		// email_2
		if (document.getElementById("email_2").value != document.getElementById("email_1").value) {
			alert("Please make sure the email addresses are the same.");
			document.getElementById("email_2_label").style.color = "red";
			document.getElementById("email_2").focus();
			return false;
		} else {
			document.getElementById("email_2_label").style.color = "black";
		}
		
		// adult_number
		if (document.getElementById("adult_number").value == 0) {
			alert("Please select the number of adults.");
			document.getElementById("adult_number_label").style.color = "red";
			document.getElementById("adult_number").focus();
			return false;
		} else {
			document.getElementById("adult_number_label").style.color = "black";
		}
		
		// arrival_date
		if (document.getElementById("arrival_date").value.length < 10) {
			alert("Please enter a valid arrival date.");
			document.getElementById("arrival_date_label").style.color = "red";
			document.getElementById("arrival_date").focus();
			return false;
		} else {
			document.getElementById("arrival_date_label").style.color = "black";
		}
		
		// departure_date
		if (document.getElementById("departure_date").value.length < 10) {
			alert("Please enter a valid departure date.");
			document.getElementById("departure_date_label").style.color = "red";
			document.getElementById("departure_date").focus();
			return false;
		} else {
			document.getElementById("departure_date_label").style.color = "black";
		}
		
		// departure_date
		if (timeDifference(document.getElementById("arrival_date").value, document.getElementById("departure_date").value) < 1) {
			alert('Please make sure that your departure date is correct.');
			document.getElementById("departure_date_label").style.color = "red";
			document.getElementById("departure_date").focus();
			return false;
		} else {
			document.getElementById("departure_date_label").style.color = "black";
		}
		
		// work_phone
		if (document.getElementById("work_phone").value.length < 10) {
			alert("Please enter a valid work phone number.");
			document.getElementById("work_phone_label").style.color = "red";
			document.getElementById("work_phone").focus();
			return false;
		} else {
			document.getElementById("work_phone_label").style.color = "black";
		}
		
		if (document.getElementById('result').innerHTML != 'PASS') {
			//getParam(document.getElementById('request'));
			alert("Please enter the exact code on the image into the text box and click the SECURITY CHECK link.");
			document.getElementById("txtCaptcha").focus();
			return false;
		}
		
		// agree
		//if (!document.getElementById("agree").checked) {
			//alert("Please read our terms and conditions and check that you agree with them.");
			//return false;
		//}
		
}

function renderNumbers(startNumber, endNumber, selectedNumber) {
	while (startNumber <= endNumber) {
		if (startNumber == selectedNumber) {
			document.write('<option value="' + startNumber + '" selected>' + startNumber + '</option>');
		} else {
			document.write('<option value="' + startNumber + '">' + startNumber + '</option>');
		}
		startNumber = startNumber + 1;
	}
}