//	browser sniffer - call with: brw = new chkBrw()
function chkBrw() {
	this.ie4 = (document.all) ? true:false;
	this.ns4 = (document.layers) ? true:false;
	this.ie5 = ((document.getElementById) && (this.ie4) && (!this.ns4)) ? true:false;
	this.ns6 = ((document.getElementById) && (!this.ie4) && (!this.ns4)) ? true:false;
	this.ie = (this.ie5 || this.ie4) ? true:false;
	this.ns = (this.ns6 || this.ns4) ? true:false;
	this.w3c = (this.ns6 || this.ie5) ? true:false;
	this.ie4 = (this.ie5) ? false:true;
	this.ns6 = (this.ns4) ? false:true;
//	if (this.ie5) { this.ie4 = false; }
//	if (this.ns6) { this.ns4 = false; }
	if (this.w3c) { this.ns6 = this.ns4 = this.ie5 = this.ie4 = false; }
}