function hide_objects() {
	var objects = document.getElementsByTagName("object");
	var embeds = document.getElementsByTagName("embed");
	for (var i=0; i<objects.length; i++) {
		if (objects[i]) {
			objects[i].style.display="none";
		}
	}
	for (var i=0; i<embeds.length; i++) {
		if (embeds[i]) {
			embeds[i].style.display="none";
		}
	}
}

function show_objects() {
	var objects = document.getElementsByTagName("object");
	var embeds = document.getElementsByTagName("embed");
	for (var i=0; i<objects.length; i++) {
		if (objects[i]) {
			objects[i].style.display="block";
		}
	}
	for (var i=0; i<embeds.length; i++) {
		if (embeds[i]) {
			embeds[i].style.display="block";
		}
	}
}