// JavaScript Document

function emailValidate(){
	var name = document.forms['contactForm'].name_txt.value;
	if (name == ""){
		alert('Please enter your name.');
		return false;
	}
	var email = document.forms['contactForm'].email_txt.value;
	if (email == ""){
		alert('Please enter your email address.');
		return false;
	}
	var message = document.forms['contactForm'].message_txt.value;
	if (message == ""){
		alert('Please enter your message.');
		return false;
	}	
}

////////////////////////////////////////////////////////

function cacheImages(){
	var i=0;
	for(i=0; ++i<arguments.length+1;){
		eval('var image'+i+'= new Image; image'+i+'.src=\''+arguments[i]+'\';');
	}
}
var page;
var el;
function doInit(){
	el = document.getElementById('b'+page);
	var img_src = el.src;
	el.src = img_src.substr(0,img_src.length-7)+'on.gif';
}

function switchButton(el){
	if(el.id != 'b'+page){ // if its an active button
		var img_src = el.src;
		var img_ext = el.src.substr(img_src.length-3,img_src.length);
		if(img_src.substr(img_src.length-7,3)=='out'){
			el.src = img_src.substr(0,img_src.length-7)+'over.'+img_ext;
		} else {
			el.src = img_src.substr(0,img_src.length-8)+'out.'+img_ext;
		}
	}
}