if (document.images) {
	var nav_01off = new Image(); nav_01off.src = "images/nav_01_off.gif";
	var nav_01on = new Image(); nav_01on.src = "images/nav_01_on.gif";

	var nav_02off = new Image(); nav_02off.src = "images/nav_02_off.gif";
	var nav_02on = new Image(); nav_02on.src = "images/nav_02_on.gif";

	var nav_03off = new Image(); nav_03off.src = "images/nav_03_off.gif";
	var nav_03on = new Image(); nav_03on.src = "images/nav_03_on.gif";

	var nav_04off = new Image(); nav_04off.src = "images/nav_04_off.gif";
	var nav_04on = new Image(); nav_04on.src = "images/nav_04_on.gif";

	var nav_05off = new Image(); nav_05off.src = "images/nav_05_off.gif";
	var nav_05on = new Image(); nav_05on.src = "images/nav_05_on.gif";

	var nav_06off = new Image(); nav_06off.src = "images/nav_06_off.gif";
	var nav_06on = new Image(); nav_06on.src = "images/nav_06_on.gif";

	var nav_07off = new Image(); nav_07off.src = "images/nav_07_off.gif";
	var nav_07on = new Image(); nav_07on.src = "images/nav_07_on.gif";

	var nav_08off = new Image(); nav_08off.src = "images/nav_08_off.gif";
	var nav_08on = new Image(); nav_08on.src = "images/nav_08_on.gif";
}

function turnOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'on.src');
	}
}

function turnOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + 'off.src');
	}
}

function popup(theURL,winName,winTitle) { //v2.0
	var myWin = window.open(theURL,winName,'width=500,height=500,scrollbars=yes');
	myWin.document.title = winTitle;
}