function toggle_display(id) {
	var obj = document.getElementById(id);
	if (id == null) {
		return;
	}
	(obj.style.display == "block") ? obj.style.display = "none" : obj.style.display = "block";
}

function set_location(src) {
	window.location = src;
}

function add_comment(form_id, value) {
	obj = document.getElementById(form_id);
	obj.parentId.value = value;
	obj.subject.focus();
}

function image_window(image_id, width, height) {
	var win = window.open("/window-image.jsp?imageId=" + image_id, "image_win", "width=" + width + ",height=" + height);
	return false;
}

function presentation_window(width, height) {
	var win = window.open("/presentation.html", "presentation_win", "width=" + width + ",height=" + height);
	return false;
}