// JavaScript Document
// for About Us
var normal1 = new Image();
normal1.src = "images/buttons/about-normal.gif";
var over1 = new Image();
over1.src = "images/buttons/abou-over.gif";
var down1 = new Image();
down1.src = "images/buttons/about-down.gif";
var up1 = new Image();
up1.src = "images/buttons/about-normal.gif";
//for Gallery button
var normal2 = new Image();
normal2.src = "images/buttons/contact-normal.gif";
var over2 = new Image();
over2.src = "images/buttons/contact-over.gif";
var down2 = new Image();
down2.src = "images/buttons/contact-down.gif";
var up2 = new Image();
up2.src = "images/buttons/contact-normal.gif";
//for Equipment button
var normal3 = new Image();
normal3.src = "images/buttons/gallery-normal.gif";
var over3 = new Image();
over3.src = "images/buttons/gallery-over.gif";
var down3 = new Image();
down3.src = "images/buttons/gallery-down.gif";
var up3 = new Image();
up3.src = "images/buttons/gallery-normal.gif";
// for Contact Us
var normal4 = new Image();
normal4.src = "images/buttons/equip-normal.gif";
var over4 = new Image();
over4.src = "images/buttons/equip-over.gif";
var down4 = new Image();
down4.src = "images/buttons/equip-down.gif";
var up4 = new Image();
up4.src = "images/buttons/equip-normal.gif";
// button change function
function changeImage(imageIndex,imageObject)
{
	document.images[imageIndex].src = imageObject.src;
}
//checkform function
function checkForm(){
	// Store the form into a variable to make it easier to reference
	var myForm = document.forms[0,1,2];
	// Store out form elements into variables
	var name = myForm.elements['name'];
	var email = myForm.elements['email'];
	//check if nameis empty
	if(name.value == ""){
		alert("Enter your name");
		name.focus();
		return false;
	}
	//check if email has an @ symbol
	if(email.value.indexOf('@') == -1){
		alert("Enter your email address");
		email.focus();
		return false;
	}
	//all good? return true
	return true;
}