// JavaScript For ianckg.com

function showImage(title, date, file, position) {
	
	//SWITCH IMAGE AND CAPTION
	if (document.getElementById('mainDiv')) {
		document.getElementById('mainDiv').innerHTML ="<img src='photos_main/"+file+"' alt='"+title+" ("+date+")' title='"+title+" ("+date+")' /><div id='caption'>"+title+" ("+date+")</div>";
	}
	
	//CHECK CLASS OF ALL IMAGES
	var imgs = document.getElementsByTagName('img');
 	for (var i in imgs) {
  		if (imgs[i].className == "activeImage") {
			imgs[i].className = "normImage";
		}
	}
	
	//SWITCH TO ACTIVE CLASS
	var image_position = "photo_"+position;
	if (document.getElementById(image_position)) {
		document.getElementById(image_position).className = "activeImage";
	}
	
}

function isEmpty(string) {
	var pattern = /\S/;
	if (pattern.test(string)) {
		return true;
	} else {
		return false;	
	}
}

function formValidate() {
	var err="";
	if (!isEmpty(document.getElementById('first_name').value)) {
		err += "Please enter your first name\r\n";	
	}
	if (!isEmpty(document.getElementById('last_name').value)) {
		err += "Please enter your last name\r\n";	
	}
	if (!isEmpty(document.getElementById('email').value)) {
		err += "Please enter your email\r\n";	
	}
	if (err == "") {
		document.getElementById('required').value = '1';
		return true;	
	} else {
		alert(err);
		return false;
	}
}