function showBlock(what) {
	document.getElementById(what).style.display = 'block';
}

function showInline(what) {
	document.getElementById(what).style.display = 'inline';
}

function hide(what) {
	document.getElementById(what).style.display = 'none';
}

function toggleBlock(what) {
	if (document.getElementById(what).style.display == 'none') {
		showBlock(what);
	}
	else {
		hide(what);
	}
}
function toggleInline(what) {
	if (document.getElementById(what).style.display == 'none') {
		showInline(what);
	}
	else {
		hide(what);
	}
}

function showLightbox(id) {
	if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
		var ieversion = new Number(RegExp.$1);
		if ((ieversion >= 6) || (ieversion >= 5)) {
			window.scrollTo(0,0);
		}
	}
	showBlock('overlay');
	showBlock(id);
}

function hideLightbox(id) {
	hide('overlay');
	hide(id);
}