/* Validation Functions */

//////////////////
// validEmail() //
//////////////////

function validEmail(emailStr) {

var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {
return false;
}

var user=matchArray[1];
var domain=matchArray[2];

if (user.match(userPat)==null) {
return false;
}

var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
return false;
}
}
}

var domainArray=domain.match(domainPat);

if (domainArray==null) {
return false;
}

var atomPat=new RegExp(atom,"g");
var domArr=domain.match(atomPat);
var len=domArr.length;

if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) {
return false;
}

if (len<2) {
return false;
}

return true;

}

/* Form Validation */

////////////////////////////
// validateListYourHome() //
////////////////////////////

function validateListYourHome(form) {

if (form.name.value == '') {
alert('Please fill out the name field.');
return false;
}

if (form.phone.value == '') {
alert('Please fill out the phone field.');
return false;
}

if (form.email.value == '') {
alert('Please enter an email address.');
return false;
}

if (!validEmail(form.email.value)) {
alert('Please enter a valid email address.');
return false;
}

if (form.address.value == ''){
alert('Please fill out the address field.');
return false;
}

form.javascript.value = 'enabled';

return true;

}

///////////////////////////
// validateAppointment() //
///////////////////////////

function validateAppointment(form) {

if (form.name.value == '') {
alert('Please fill out the name field.');
return false;
}

if (form.phone.value == '') {
alert('Please fill out the phone field.');
return false;
}

if (form.email.value == '') {
alert('Please enter an email address.');
return false;
}

if (!validEmail(form.email.value)) {
alert('Please enter a valid email address.');
return false;
}

form.javascript.value = 'enabled';

return true;

}