var IE4 = false;
var IE5 = false;
var IE5MAC = false;
var NS4 = false;
var W3C = false;

if (document.all && document.getElementById)
{
	if (document.documentElement.clientHeight != null) {
		IE5 = true;
	} else {
		IE5MAC = true;
	}
}
else if (document.all)
{
	IE4 = true;
}
else if (document.layers)
{
	NS4 = true;
}
else if (document.getElementById)
{
	W3C = true;
}

var NS6 = W3C;		// Netscape 6 is W3C Compliant
var FIREFOX = W3C;	// Firefox is W3C Compliant