var ver = navigator.appVersion.toLowerCase();

if (ver.indexOf("mac") != -1) {

// platform is Macintosh
	document.write('<link rel="stylesheet" href="style/DA.Mac.css">');
} else {

// platform is something else, probably Windows
	document.write('<link rel="stylesheet" href="style/DA.Win.css">');
}

					 home_on = new Image(59, 21)
                     home_on.src = "images/homebttn_f2.gif"
                     home_off = new Image(59, 21)
                     home_off.src = "images/homebttn.gif"

					 about_on = new Image(78, 21)
                     about_on.src = "images/aboutbttn_f2.gif"
                     about_off = new Image(78, 21)
                     about_off.src = "images/aboutbttn.gif"

					 services_on = new Image(148, 21)
                     services_on.src = "images/servicesbttn_f2.gif"
                     services_off = new Image(148, 21)
                     services_off.src = "images/servicesbttn.gif"

					 clients_on = new Image(92, 21)
                     clients_on.src = "images/clientsbttn_f2.gif"
                     clients_off = new Image(92, 21)
                     clients_off.src = "images/clientsbttn.gif"

					 contact_on = new Image(119, 21)
                     contact_on.src = "images/contactbttn_f2.gif"
                     contact_off = new Image(119, 21)
                     contact_off.src = "images/contactbttn.gif"

					
			function chgimage(imgst,imgName){
				document [imgName].src = eval(imgName + "_" + imgst + ".src");
			}