var warn_message="Please contact Arturo Torres about photo usage.";
function copyright_warn(button) {
	alert(warn_message);
	return false;
}

var biography_on = new Image()
biography_on.src = "images/global//biography_over.gif";
var biography_off = new Image()
biography_off.src = "images/global//biography_off.gif";

var photography_on = new Image()
photography_on.src = "images/global//photography_over.gif";
var photography_off = new Image()
photography_off.src = "images/global//photography_off.gif";

var ordering_on = new Image()
ordering_on.src = "images/global//ordering_over.gif";
var ordering_off = new Image()
ordering_off.src = "images/global//ordering_off.gif";

var contact_on = new Image()
contact_on.src = "images/global//contact_over.gif";
var contact_off = new Image()
contact_off.src = "images/global//contact_off.gif";

var animals_on = new Image()
animals_on.src = "images/global//animals_over.gif";
var animals_off = new Image()
animals_off.src = "images/global//animals_off.gif";

var architecture_on = new Image()
architecture_on.src = "images/global//architecture_over.gif";
var architecture_off = new Image()
architecture_off.src = "images/global//architecture_off.gif";

var favorites_on = new Image()
favorites_on.src = "images/global//favorites_over.gif";
var favorites_off = new Image()
favorites_off.src = "images/global//favorites_off.gif";

var countries_on = new Image()
countries_on.src = "images/global//countries_over.gif";
var countries_off = new Image()
countries_off.src = "images/global//countries_off.gif";

var flowers_on = new Image()
flowers_on.src = "images/global//flowers_over.gif";
var flowers_off = new Image()
flowers_off.src = "images/global//flowers_off.gif";

var nature_on = new Image()
nature_on.src = "images/global//nature_over.gif";
var nature_off = new Image()
nature_off.src = "images/global//nature_off.gif";

var people_on = new Image()
people_on.src = "images/global//people_over.gif";
var people_off = new Image()
people_off.src = "images/global//people_off.gif";

var religious_on = new Image()
religious_on.src = "images/global//religious_over.gif";
var religious_off = new Image()
religious_off.src = "images/global//religious_off.gif";

var seattle_on = new Image()
seattle_on.src = "images/global//seattle_over.gif";
var seattle_off = new Image()
seattle_off.src = "images/global//seattle_off.gif";

var spain_on = new Image()
spain_on.src = "images/global//spain_over.gif";
var spain_off = new Image()
spain_off.src = "images/global//spain_off.gif";

var france_on = new Image()
france_on.src = "images/global//france_over.gif";
var france_off = new Image()
france_off.src = "images/global//france_off.gif";

var italy_on = new Image()
italy_on.src = "images/global//italy_over.gif";
var italy_off = new Image()
	italy_off.src = "images/global//italy_off.gif";

var mexico_on = new Image()
mexico_on.src = "images/global//mexico_over.gif";
var mexico_off = new Image()
mexico_off.src = "images/global//mexico_off.gif";

var english_on = new Image()
english_on.src = "images/global//english_over.gif";
var english_off = new Image()
english_off.src = "images/global//english_off.gif";

var spanish_on = new Image()
spanish_on.src = "images/global//spanish_over.gif";
var spanish_off = new Image()
spanish_off.src = "images/global//spanish_off.gif";

function img_ON(imgName) {
	imgOn = eval(imgName + "_on.src")
	document [imgName].src = imgOn
}
function img_OFF(imgName) {
	imgOff = eval(imgName + "_off.src")
	document [imgName].src = imgOff
}
	
function emailCheck (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;
			return true;
		}
	
		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>4)
			return false;
		if (len<2)
		   return false;
		return true;
}

function validate() {
		if (document.forms[0].full_name.value=="") {
			alert('Please enter your name.');
		} else if (!(emailCheck(document.forms[0].email.value))) {
			alert('Please enter a valid e-mail address.');
		} else {
			return true;
		}
		return false;
}