var imgName = "background3.jpg"
var num = 0;
var detectMac = navigator.userAgent.toLowerCase();
var addMac = "";
var place = detectMac.indexOf("mac");

if (place != -1)
{
	addMac = "mac";
}

function getRanNum(Index)
{
	var num = Math.random();
	num = Math.round((num*100));
	num = num%Index + 1;
	return num;
}
var NumImages = 8;
var agent = navigator.userAgent
var browserVer = 2;
if (agent.substring(0,7) == "Mozilla")
{
	if (parseInt(agent.substring(8,9)) >= 3) 
		{browserVer = 1;}
}
if (browserVer == 1) 
{
	var imgName = "background" + getRanNum(NumImages) + addMac + ".jpg";
	
document.write(" <style type='text/css'>");
document.write(" <!--");  
document.write(" body {");  
document.write(" background-attachment: fixed; ");
document.write(" background-image: url(http://www.jmu.edu/jmuweb/background/general/" + imgName + ");"); 
document.write(" background-repeat: no-repeat;");
document.write(" }-->");
document.write(" </style>");

}