// JavaScript Document
function validateFormOnSubmit(theForm) {
	var reason = "";
	//alert("Valid information: " + theForm.agreed.checked);
	var ok 	= theForm.agreed.checked;
	reason += validateEmpty(theForm.fname, 'First name');
 	reason += validateEmpty(theForm.surname, 'Surname');
  	reason += validateEmail(theForm.email);
	//reason += validateCheckbox(theForm.agreed, 'Select information entered is genuine');
	if (!ok) { 
		reason += " - Select information entered is genuine\n";
	}
	//alert("Valid information: " + ok);
    //reason += checkCheckbox (theForm, 'agreed', 1, 'Select information entered is genuine');
	
	if (reason != "") {
		alert("Please correct the following:\n\n" + reason);
		return false;
	}
	return true;
}
function validateEmpty(fld, msg) {
    var error = "";
 
    if (fld.value.length == 0) {
        fld.style.background = 'Yellow'; 
        error = " - " + msg + "\n";
    } else {
        fld.style.background = 'White';
    }
    return error;  
}

function validateCheckbox(fld, msg) {
    var error = "";
 	alert("Validating information..." + document.bookingform.agreed[0].checked);
   	if (fld.checked == false) { 
        error = " - " + msg + "\n";
    }
    return error;
}
/*
function checkCheckbox (f,name,require, msg) {
	var checked = 0, e, i = 0;
	var error="";
	while (e = f.elements[i++]) {if (e.type == 'checkbox' && e.className == name && e.checked) checked++}
	if (checked < require) {
		error = " - " msg + "\n"; 
	}
	return error;
}
*/

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}
function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
   
    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = " - Email\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
		//Please enter a valid email address
        error = " - Email\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = " - Email\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}
function validateVerify(fld) {
    var error="";
    if (fld.value != "L85Za") {
        fld.style.background = 'Yellow';
        error = " - Verification code\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}
function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');    
	if(fld != ""){
	   if (isNaN(parseInt(stripped))) {
			error = " - Phone\n";
			fld.style.background = 'Yellow';
		} else if (!(stripped.length == 10)) {
			//The phone number is the wrong length. Make sure you included an area code
			error = " - Phone (Please include a valid area code)\n";
			fld.style.background = 'Yellow';
		} else {
			 fld.style.background = 'White';
		}
		return error;
	}
}