var navV=navigator.appVersion;
	var navA=navigator.userAgent;
	var dom=document.getElementById?1:0;
	var op=(navA.indexOf("Opera")>-1 && dom)?1:0;
	var ie4=(document.all && !dom && !op)?1:0;
	var ie5=(navV.indexOf("MSIE 5")>-1)?1:0;
	var ie6=(navV.indexOf("MSIE 6")>-1)?1:0;
		ie5=((ie5||ie6) && dom && !op)?1:0;
	var ns4=(document.layers && !op)?1:0;
	var ns5=(parseInt(navV)>= 5 && dom && !op)?1:0;
	var win=navA.indexOf("Win")>-1?1:0;
	var mac=navA.indexOf("Mac")>-1?1:0;
	var useable=(dom||ie4||ie5||ie6||ns4||ns5||op)?1:0;
	
	if(ie4)location.href="index_n4.html";
	if(ns4)location.href="index_n4.html";