function ShowBox(mapRegion) {
	switch(mapRegion) {
		case 'field':
			blurb = '<strong>Field:</strong>&nbsp; The field is the background&mdash;the part of the coin that shows no picture or words.';
			break;
		case 'relief':
			blurb = '<strong>Relief:</strong>&nbsp; The relief is all the markings&mdash;the part of the surface that\'s raised above the field.';
			break;
		case 'bust':
			blurb = '<strong>Bust:</strong>&nbsp; A bust is a portrait, usually including the person\'s head, neck, and upper shoulders.';
			break;
		case 'legend':
			blurb = '<strong>Legend:</strong>&nbsp; The legend is the main wording (inscription) on the coin.';
			break;
		case 'mintmark':
			blurb = '<strong>Mint Mark:</strong>&nbsp; The mint mark is a small letter that tells which mint branch struck the coin.';
			break;
		case 'date':
			blurb = '<strong>Date:</strong>&nbsp; The date usually tells in what year the coin was minted.';
			break;
		case 'edge':
			blurb = '<strong>Edge:</strong>&nbsp; The edge is the outer surface, the "third side."  The edge can have lettering, reeding, or designs on it.';
			break;
		case 'rim':
			blurb = '<strong>Rim:</strong>&nbsp; The rim is a raised area near the edge around the design on both sides.  The upsetting mill creates it to help the coin wear out less quickly.';
			break;
		case 'reverse':
			blurb = '<strong>Reverse:</strong>&nbsp; The reverse is what numismatists call the back (or "tails") side of a coin.';
			break;
		case 'obverse':
			blurb = '<strong>Obverse:</strong>&nbsp;  The obverse is the front (or "heads") side of a coin. It usually has the date, mint mark, and main design.';
			break;
		case 'inscription':
			blurb = '<strong>Inscription:</strong>&nbsp; An inscription is any letter, word, or phrase pressed into the surface of a coin.';
			break;
	}
	document.getElementById('textDiv').innerHTML				= blurb;
	document.getElementById('textDiv').style.display			= 'block';
}

function fnSwap(pBlock) {
	if(pBlock == 'notCentA') {
		document.getElementById("notCentA").style.display = 'none';
		document.getElementById("notCentB").style.display = 'block';
	} else {
		document.getElementById("notCentA").style.display = 'block';
		document.getElementById("notCentB").style.display = 'none';
	}
}