Test For	Command	Result for your Browser
Browser	is.b	ns
Version	is.v	5
Netscape 4 or 5	is.ns	true
Netscape 4 only	is.ns4	false
Netscape 5 only	is.ns5	true
IE 4 or 5	is.ie	false
IE 4 only	is.ie4	false
IE 5 only	is.ie5	false
IE 4,5 or NS 4,5	is.min	true