var openLightbox = function() {
	document.appendChild('<div id="light" class="lightbox_white_content"></div><div id="fade" class="lightbox_black_overlay"></div>');
	var a = document.getElementByTagName('body');
	a.style.overflow = 'hidden';
}

var selectAll = function (check, form) {
	for (n = 0; n < form.elements.length; n++) {
		if (form.elements[n].type == 'checkbox') {
			form.elements[n].checked = check;
		}
	}
}