if (document.images) {
	
	downloadButtonOn = new Image();
	downloadButtonOn.src = "../images/buttons/download-a.png";
	downloadButtonOff = new Image();
	downloadButtonOff.src = "../images/buttons/download-na.png";
	
	downloadProductButtonOn = new Image();
	downloadProductButtonOn.src = "../images/buttons/download-rt-a.png";
	downloadProductButtonOff = new Image();
	downloadProductButtonOff.src = "../images/buttons/download-rt-na.png";
	
	orderButtonOn = new Image();
	orderButtonOn.src = "../images/buttons/order-rt-a.png";
	orderButtonOff = new Image();
	orderButtonOff.src = "../images/buttons/order-rt-na.png";
	
	orderEntButtonOn = new Image();
	orderEntButtonOn.src = "../images/buttons/order-ent-rt-a.png";
	orderEntButtonOff = new Image();
	orderEntButtonOff.src = "../images/buttons/order-ent-rt-na.png";
	
	orderButtonNowOn = new Image();
	orderButtonNowOn.src = "../images/buttons/order-now-rt-a.png";
	orderButtonNowOff = new Image();
	orderButtonNowOff.src = "../images/buttons/order-now-rt-na.png";
	
}
	

function overdownload(over, num) {	
	showImageWithNum("downloadButton", num, over);
}

function overdownloadproduct(over, num) {	
	showImageWithNum("downloadProductButton", num, over);
}		

function overOrderEnt(over, num) {	
	showImageWithNum("orderEntButton", num, over);
}

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

function overOrderNow(over, num) {	
	showImageWithNum("orderButtonNow", 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);
}