function preloadImages(theArray,prefix) {
	eval("useArray = " + theArray);
	for (x=0;x<useArray.length;x++) {
		eval(useArray[x] + 'off = new Image()');
		eval(useArray[x] + 'off.src = "images/" + prefix + "_" + useArray[x] + ".gif"');
		eval(useArray[x] + 'on = new Image()');
		eval(useArray[x] + 'on.src = "images/" + prefix + "_" + useArray[x] + "_over.gif"');
	}
}

function turnon(i,whichLayer) {
	if (document.layers && whichLayer) {
		eval('document["' + whichLayer + '"].document[i].src = ' + i + 'on.src');
	} else {
		document[i].src = eval(i + "on.src");
	}
}

function turnoff(i,whichLayer) {
	if (document.layers && whichLayer) {
		eval('document["' + whichLayer + '"].document[i].src = ' + i + 'off.src');
	} else {
		document[i].src = eval(i + "off.src");
	}
}

if (document.getElementById) {
	doc = "document.getElementById('"
	sty = "').style";
} else if (document.layers) {
	doc = "document['";
	sty = "']";
} else if (document.all) {
	doc = "document.all['";
	sty = "'].style";
}

currentProduct = ""

function showLyr(layerName) {
	if (currentProduct != "" && currentProduct != layerName) {
		eval(doc + currentProduct + sty + '.visibility = "hidden"')
	}
	eval(doc + layerName + sty + '.visibility = "visible"')
	currentProduct = layerName
}