// JavaScript Document
//validate email
		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("Your email address appears to be invalid")
			return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
			alert("Your email address appears to be invalid")
			return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
			alert("Your email address appears to be invalid")
			return false
		}
		if (str.indexOf(at,(lat+1))!=-1){
			alert("Your email address appears to be invalid")
			return false
		}
		if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
			alert("Your email address appears to be invalid")
			return false
		}
		if (str.indexOf(dot,(lat+2))==-1){
			alert("Your email address appears to be invalid")
			return false
		}
		if (str.indexOf(" ")!=-1){
			alert("Your email address appears to be invalid")
			return false
		}
		return true				
		}
//validate phone number		
// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 11;
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 trim(s)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not a whitespace, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
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++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone){
	var bracket=3
	strPhone=trim(strPhone)
	if(strPhone.indexOf("+")>1) return false
	if(strPhone.indexOf("-")!=-1)bracket=bracket+1
	if(strPhone.indexOf("(")!=-1 && strPhone.indexOf("(")>bracket)return false
	var brchr=strPhone.indexOf("(")
	if(strPhone.indexOf("(")!=-1 && strPhone.charAt(brchr+2)!=")")return false
	if(strPhone.indexOf("(")==-1 && strPhone.indexOf(")")!=-1)return false
	s=stripCharsInBag(strPhone,validWorldPhoneChars);
	return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}
		function ValidateForm(){
		var phoneNumber=document.bookingFormMailForm.phoneNumber			
		if ((document.bookingFormMailForm.customerName.value==null)||(document.bookingFormMailForm.customerName.value=="")){
			alert("Please enter your full name")
			document.bookingFormMailForm.customerName.focus()
			return false
		}		
		if ((document.bookingFormMailForm.emailAddress.value==null)||(document.bookingFormMailForm.emailAddress.value=="")){
			alert("Please enter your email address")
			document.bookingFormMailForm.emailAddress.focus()
			return false
		}
		if (echeck(document.bookingFormMailForm.emailAddress.value)==false){
			document.bookingFormMailForm.emailAddress.value=""
			document.bookingFormMailForm.emailAddress.focus()
			return false
		}
		if ((phoneNumber.value==null)||(phoneNumber.value=="")){
			alert("Please enter your phone number")
			phoneNumber.focus()
			return false
		}
		if (checkInternationalPhone(phoneNumber.value)==false){
			alert("Please enter a valid phone number")
			phoneNumber.value=""
			phoneNumber.focus()
			return false
		}		
			return true
		}