var agt=navigator.userAgent.toLowerCase();
var ie  = (agt.indexOf("msie") != -1);
var ns  = (navigator.appName.indexOf("Netscape") != -1);
var win = (agt.indexOf("windows")!=-1);
var mac = (agt.indexOf("mac")!=-1);

function go() {
	location.href = "indexall.php";
}

function go2() {
	location.href = "indexall.php?browser=iepc";
}

function go3() {
	location.href = "indexall.php?browser=iemac";
}

if (ie && win) {
				go2(); 
			   }
else if (ie && mac) {
				go3(); 
			   }

	else {
	go();
	}