function validate(theForm) 
{
var reason = "";

  reason += validateName(theForm.name);  
  reason += validateEmail(theForm.email);
  reason += validateConfirmEmail(theForm.confirm_email);
  reason += validateTel();
  reason += validateComment(theForm.comment);
 
  if (reason != "") {
    //alert("Some fields need correction:\n" + reason);

    return false;    
    }
    
  return true;
}


function validateComment(fld)
{
	var error = "";
    //var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "Enter the cost of the property.\n";
    } 
    
    else {
        fld.style.background = 'white';
    } 

    return error;
}

function validateName(fld)
{
	var error = "";
    //var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "Enter the cost of the property.\n";
    } 
    
    else {
        fld.style.background = 'white';
    } 

    return error;
}

function validateConfirmEmail(fld) {
    var error = "";
    //var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "Enter the cost of the property.\n";
    }
    
    else if(fld.value != document.form.email.value)
    {
    	alert('Emails do not match, \n Please confirm email.');

    	error = "Enter the cost of the property.\n";
    }
    
    else {
        fld.style.background = 'white';
    } 

    return error;
}

function validateEmail(fld){
	var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
    
    if (fld.value == "") {
        error = "Enter email.\n";
        fld.style.background = 'yellow';
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        error = "Please enter a valid email address.\n";
        fld.style.background = 'yellow';
        
    } else if (fld.value.match(illegalChars)) {
        error = "The email address contains illegal characters.\n";
        fld.style.background = 'yellow';

    } else {
        fld.style.background = 'white';
       
    }
    return error;

}

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}




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 = 10;

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 validateTel()
{
	var error = "";
    //var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   var Phone=document.form.tel
	
	if ((Phone.value==null)||(Phone.value=="")){
		error = 'no phone';
		Phone.style.background = 'Yellow';
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false
	}
	Phone.style.background = 'White';
	return true, error;
	
}