var its = new its();
var styleSheet;
var baseURL = 'http://www.cbrl.ca/educators/mclennans/style/';

if (its.mac) {
	if (its.ie) {
		styleSheet = 'macie.css';
    }
	else {
		styleSheet = 'macns.css';
    }
}
else {
    if (its.ie) {
		styleSheet = 'pcie.css';
    }
	else {
		styleSheet = 'pcns.css';
    }
}
document.write('<link href="' + baseURL + styleSheet + '" rel="styleSheet" type="text/css">');

function its() {
	var n = navigator;
	// string comparisons are much easier if we lowercase everything now.
	// to make indexOf() tests more compact/readable, we prepend a space 
	// to the userAgent string (to get around '-1' indexOf() comparison)
	var ua = ' ' + n.userAgent.toLowerCase();

	this.nn = ua.indexOf('mozilla') > 0;
	// 'compatible' versions of mozilla aren't navigator
	if(ua.indexOf('compatible') > 0) {
		this.nn = false;
	}
	this.ie = ua.indexOf('msie') > 0;
	this.mac = ua.indexOf('mac') > 0;
	this.win = ua.indexOf('win') > 0;

	return this;
}