var imgs = new Array();
var errors = new Array();

window.onload = function() {
	var items = document.getElementsByName('menu_item');
	for (var indx = 0; indx < items.length; indx++) {
		var img = items[indx];
		var id = img.getAttribute('id');
		
		var src = img.getAttribute('src').replace('.png', '-h.png');
		imgs[id] = new Array(img.src, new Image());
		imgs[id][1].src = src;
		
		img.onmouseover = function() {
			this.src = imgs[this.id][1].src;
		}
		
		img.onmouseout = function() {
			this.src = imgs[this.id][0];
		}
	}
}

function emailCheck(email) {
	var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
	return pattern.test(email);
}

function checkForm() {
	var err = '';
	if (document.getElementById('name').value == '') {
		err += errors[0];
		err += '\n';
	}
	
	if (emailCheck(document.getElementById('email').value) == false) {
		err += errors[1];
	}
	
	if (err != '') {
		alert(err);
		return false;
	}
	return true;
}