// who's the browser maker?
var browser;
if (navigator.userAgent.indexOf("IE") >= 0)
	browser = "IE";
else if (navigator.userAgent.indexOf("Opera") >= 0)
	browser = "OP";
else
	browser = "NS";

// what's the browser version Number?
var brow_ver;
if (navigator.userAgent.indexOf("Mozilla/4.") >= 0)
	brow_ver = 4;
else if (navigator.userAgent.indexOf("Mozilla/3.") >= 0)
	brow_ver = 3;
else
	brow_ver = 0;