function show_detail () {
	var showdetail = document.getElementById ('showdetail');
	if (showdetail) {
		var display = showdetail.style.display;
		if (display == 'none' || !display) {
			showdetail.style.display = 'block';
			keep = true;
			document.onclick = closedetail;
			document.onkeydown = escapedetail;
			showdetail.onclick = Keep;
		}
		else showdetail.style.display = 'none';
		return false;
	}
	else return true;
}

function Keep() {
	keep = true;
}

function closedetail (event) {
	if (keep) {
		keep = false;
		return;
	}
	var showdetail = document.getElementById ('showdetail');
	if (!showdetail)
		return;
	showdetail.style.display = 'none';
	document.onclick = null;
	document.onkeydown = null;
}

function escapedetail (event) {
	if (window.event) event = window.event;
	var code = event.keyCode ? event.keyCode : event.which ? event.which : null;
	if (code == 27) {
		var showdetail = document.getElementById ('showdetail');
		if (!showdetail)
			return;
		showdetail.style.display = 'none';
		document.onclick = null;
		document.onkeydown = null;
	}
}