//this function determines what browser is being used to view this page
	function Is (){
		// convert all characters to lowercase to simplify testing
	   	this.agt = navigator.userAgent.toLowerCase();
		this.appVer = navigator.appVersion.toLowerCase();
		
		// *** BROWSER DETECTION ***
	
		//this is true if the browser is netscape
	   	this.nav = ((this.agt.indexOf('mozilla')!=-1) && ((this.agt.indexOf('spoofer')==-1) && (this.agt.indexOf('compatible') == -1)));
	
		//this is true if the browser is explorer
	   	this.ie = (this.agt.indexOf('msie') != -1);
		
		//this is true if the client computer is a mac
		this.isMac = (this.agt.indexOf('mac') != -1);
	}
	var is = new Is();

	IE4=0;
	NN4=0;
	if (document.all && !document.getElementById) { var IE4="true"; } //Internet Explorer 4
	else if (document.layers) { var NN4="true"; } //Netscape Navigator 4
	else if (document.getElementById) { var IENN5="true"; } //Netscape Navigator 6 or Internet Explorer 5 and up
	
	//document.write("is.agt = "+is.agt+"appVer = "+is.appVer+"<br>");
	//document.write("isMac = "+is.isMac+"IE4 = "+IE4+"NN4 = "+NN4+"<br>");
	//document.write("appVersion= "+is.appVer.substr(0,1))
	
	// stylesheet include
	if (NN4) {
		document.write('<link rel="stylesheet" href="includes/oldbrowser.css" type="text/css" />')
	} else if (!is.isMac & IE4) {
		document.write('<link rel="stylesheet" href="includes/oldbrowser.css" type="text/css" />')
	} else {
		document.write('<link rel="stylesheet" href="includes/main.css" type="text/css" media="screen" />')
		document.write('<link href="includes/print.css" rel="stylesheet" type="text/css" media="print" />')	
	}