ua  = navigator.userAgent.toLowerCase();
detectBrowser = {
	'ie6' : (ua.indexOf('msie') && document.all && ua.indexOf('netscape') == -1),
	'nnf' : (ua.indexOf('netscape') != -1 && ua.indexOf('gecko') != -1),
	'nni' : (ua.indexOf('netscape') != -1 && ua.indexOf('msie') != -1),
	'nn6' : (ua.indexOf('netscape') != -1),
	'gek' : (ua.indexOf('gecko') != -1),
	'ff1' : (ua.indexOf('firefox') != -1),
	'opr' : (ua.indexOf('opera') != -1),
	'mac' : (ua.indexOf('mac') != -1),
	'web' : (ua.indexOf('webtv') != -1),
	'saf' : (ua.indexOf('safari') != -1),
	'kon' : (ua.indexOf('konqueror') != -1),
	'nn4' : (document.layers)
}