function showMap1(){
			document.getElementById('map1Select').style.visibility = 'visible';
			document.getElementById('map1Select').style.display = 'block';
			document.getElementById('map2Select').style.visibility = 'hidden';
			document.getElementById('map2Select').style.display = 'none';
			document.getElementById('map3Select').style.visibility = 'hidden';
			document.getElementById('map3Select').style.display = 'none';
			
			document.getElementById('map1').style.visibility = 'visible';
			document.getElementById('map1').style.display = 'block';
			document.getElementById('map2').style.visibility = 'hidden';
			document.getElementById('map2').style.display = 'none';
			document.getElementById('map3').style.visibility = 'hidden';
			document.getElementById('map3').style.display = 'none';
		}
		function showMap2(){
			document.getElementById('map1Select').style.visibility = 'hidden';
			document.getElementById('map1Select').style.display = 'none';
			document.getElementById('map2Select').style.visibility = 'visible';
			document.getElementById('map2Select').style.display = 'block';
			document.getElementById('map3Select').style.visibility = 'hidden';
			document.getElementById('map3Select').style.display = 'none';
			
			document.getElementById('map2').style.visibility = 'visible';
			document.getElementById('map2').style.display = 'block';
			document.getElementById('map1').style.visibility = 'hidden';
			document.getElementById('map1').style.display = 'none';
			document.getElementById('map3').style.visibility = 'hidden';
			document.getElementById('map3').style.display = 'none';
		}
		function showMap3(){
			document.getElementById('map1Select').style.visibility = 'hidden';
			document.getElementById('map1Select').style.display = 'none';
			document.getElementById('map2Select').style.visibility = 'hidden';
			document.getElementById('map2Select').style.display = 'none';
			document.getElementById('map3Select').style.visibility = 'visible';
			document.getElementById('map3Select').style.display = 'block';
			
			document.getElementById('map3').style.visibility = 'visible';
			document.getElementById('map3').style.display = 'block';
			document.getElementById('map1').style.visibility = 'hidden';
			document.getElementById('map1').style.display = 'none';
			document.getElementById('map2').style.visibility = 'hidden';
			document.getElementById('map2').style.display = 'none';
		}
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		puzzle_02_over = newImage("html/img/puzzle_02_over.gif");
		puzzle_03_over = newImage("html/img/puzzle_03_over.gif");
		puzzle_04_over = newImage("html/img/puzzle_over.gif");
		puzzle_05_over = newImage("html/img/puzzle_05_over.gif");
		puzzle_06_over = newImage("html/img/puzzle_06_over.gif");
		puzzle_01_over = newImage("html/img/puzzle_01_over.gif");
		preloadFlag = true;
	}
}