// JavaScript Document

function swapImages(imageId){
	image = document.getElementById('menu_' + imageId);
	if(image.src.indexOf("_on") > -1){ //current on, now turn it off
		image.src = "images/menu_" + imageId + "_off.gif";
		if(imageId > 1){//do the left side
			imageLeft = document.getElementById('menu_' + (imageId-1));
			if(currentMenuOn == imageId - 2){
				imageLeft.src = "images/menu_on_off.gif";
			}
			else
				imageLeft.src = "images/menu_off_off.gif";
		}
		if(imageId < 7){//do the right side
			imageRight = document.getElementById('menu_' + (imageId+1));
			if(currentMenuOn == imageId + 2)
				imageRight.src = "images/menu_off_on.gif";
			else
				imageRight.src = "images/menu_off_off.gif";
		}
	}
	else{
		image.src = "images/menu_" + imageId + "_on.gif";
		if(imageId > 1){//do the left side
			imageLeft = document.getElementById('menu_' + (imageId-1));
			if(currentMenuOn == imageId - 2){
				imageLeft.src = "images/menu_on_on.gif";
			}
			else
				imageLeft.src = "images/menu_off_on.gif";
		}
		if(imageId < 7){//do the right side
			imageRight = document.getElementById('menu_' + (imageId+1));
			if(currentMenuOn == imageId + 2)
				imageRight.src = "images/menu_on_on.gif";
			else
				imageRight.src = "images/menu_on_off.gif";
		}
	}
}

function checkEmail(emailField) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(emailField.value)){
  return true;
} else {
  window.alert("Please enter a valid e-mail address.");
  return false;
}
}

function validateForm() {
  var ret = false;

  if(document.forms[0].fullname.value == "") {
	window.alert("Please enter your full name.");
	return ret;
  } else if(document.forms[0].email.value == "") {
	window.alert("Please enter your email address.");
	return ret;
  } else if(document.forms[0].company.value == "") {
	window.alert("Please enter your company's name.");
	return ret;
  } else if(document.forms[0].phonenumber.value == "") {
	window.alert("Please enter your phone number.");
	return ret;

  } else if(document.forms[0].zip.value == "") {
		window.alert("Please enter your Zip/Postal Code.");
		return ret;

  } else if(checkEmail(document.forms[0].email) == false) {

	return false;
  } 
  else {
	return ValidatePhone();
  }
  return true;

}

// 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 = 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 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){
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function ValidatePhone(){
	var Phone=document.forms[0].phonenumber

	if ((Phone.value==null)||(Phone.value=="")){
		alert("Please Enter your Phone Number.")
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number.")
		Phone.value=""
		Phone.focus()
		return false
	}
	return true
 }