if (document.images) {
	
	orderButtonOn = new Image();
	orderButtonOn.src = "images/buttons/buy-smart-a.png";
	orderButtonOff = new Image();
	orderButtonOff.src = "images/buttons/buy-smart-na.png";
	
}

function overOrder(over, num) {	
	showImageWithNum("orderButton", num, over);
}

function showCommonImage(name, image, over) {
	if(over) {
		document.getElementById(name).src = eval(image + "On.src");
	} else {
		document.getElementById(name).src = eval(image + "Off.src");
	}
}

function showImageWithNum(name, num, over) {
	var newName = name + num;
	showCommonImage(newName, name, over);
}