function roll (m,x,n) {
	if (m=="on")  {
			document["btn"+x].src	= "images/"+n+"_on.gif"; 
		}
		else {
			document["btn"+x].src	= "images/"+n+"_off.gif";   
		}
}

//Detect Operating System and apply appropriate CSS
if (navigator.appVersion.indexOf("Win")!=-1) document.write('<link href="styles/redemedia_Win.css" rel="stylesheet" type="text/css"><link href="styles/redemedia.css" rel="stylesheet" type="text/css">');

if (navigator.appVersion.indexOf("Mac")!=-1) document.write('<link href="styles/redemedia_Mac.css" rel="stylesheet" type="text/css"><link href="styles/redemedia.css" rel="stylesheet" type="text/css">');