var isNN = (navigator.appName=="Netscape");
var isIE = (navigator.userAgent.indexOf("MSIE")!=-1);
var mac = (navigator.appVersion.indexOf('Mac',0) != -1);
var win = (navigator.appVersion.indexOf('Win',0) != -1);
var ver = (navigator.appVersion.charAt(0));
var browser = navigator.appName;

function topTo() {
if(navigator.appName.charAt(0)=='N'){
	if (window.pageYOffset > 0 ) {scrollTo (0,0);}
	}else if(navigator.appName.charAt(0)=='M'){
	if (document.body.scrollTop > 0 ) {scrollTo (0,0);}
	}
}