var agent = navigator.userAgent
var appName = navigator.appName
var netscape = appName.indexOf("Netscape",0)
var mac = agent.indexOf("Mac",0)
if (mac != -1){
	document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="mac.css">')
	}
	else {if(netscape == -1) document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="win_ie.css">')
	else document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="win_ns.css">')
	}