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) {
		ibutton1 = newImage("images/button1g.gif");
		ibutton2 = newImage("images/button2g.gif");
		ibutton3 = newImage("images/button3g.gif");
		ibutton4 = newImage("images/button4g.gif");
		ibutton5 = newImage("images/button5g.gif");
		ibutton6 = newImage("images/button6g.gif");
		ibutton7 = newImage("images/button7g.gif");
		ibutton8 = newImage("images/button8g.gif");
		ibutton9 = newImage("images/button9g.gif");
		ibutton10 = newImage("images/button10g.gif");
		preloadFlag = true;
	}
}