var Win = navigator.userAgent.indexOf("Win") > -1;
var Mac = navigator.userAgent.indexOf("Mac") > -1;

var ver= parseInt(navigator.appVersion);
	if (ver < 4){
	}else if (document.layers){
	//netscape4
		document.write ('<script language="Javascript" src="'+pathvar+'site/ns4_home.js"><\/script>');
	}else if (document.all){
		document.write ('<script language="Javascript" src="'+pathvar+'site/ie_home.js"><\/script>');	
	}else if (document.getElementById){
	//netscape6
		document.write ('<script language="Javascript" src="'+pathvar+'site/ns_home.js"><\/script>');
	}else{
	}