function toggle_disp(itemId,URL) {
	var elem, disp, test;
	if (document.all) {
		elem = document.all(itemId);
	} else if (document.getElementById) {
		elem = document.getElementById(itemId);
	} else {
		test = block6.style
		test.display = disp;
		location.href = URL;
	}
	disp = elem.style.display;
	if(disp == "block") {
		disp = "none";
	} else {
		disp = "block";
	}
	elem.style.display = disp;
}