if (document.images) {
	img1off = new Image();
	img1off.src = "buttons/monthly_message_off.gif";
	img2off = new Image();
	img2off.src = "buttons/monthly_message14_off.gif";
	
	img1on = new Image();
	img1on.src = "buttons/monthly_message_on.gif";
	img2on = new Image();
	img2on.src = "buttons/monthly_message14_on.gif";
	
}  

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

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