var _UserAgent_isDOM = document.getElementById; //The browser conforms to DOM1 (MSIE 5+, Firefox 2+, Opera 5+, Netscape 6+)
var _UserAgent_hasLayers;
if(document.layers) _UserAgent_hasLayers=true; else _UserAgent_hasLayers=false;
var _UserAgent_family;
var _UserAgent_generation;
if(window.opera)
{
	_UserAgent_family = "opera";
	if(_UserAgent_isDOM) _UserAgent_generation = 5;
	if(window.print) _UserAgent_generation = 6;
	if(document.readyState) _UserAgent_generation = 7;
}
if(document.all && document.all.item && _UserAgent_family!="opera")
{
	_UserAgent_family = "MSIE";
	_UserAgent_generation = 4;
	if(_UserAgent_isDOM) _UserAgent_generation = 5;
}
if(_UserAgent_hasLayers)
{
	_UserAgent_family = "netscape";
	_UserAgent_generation = 4;
}
if(_UserAgent_isDOM && navigator.appName && ((navigator.appName=="Mozilla")||(navigator.appName=="Netscape")))
{
	_UserAgent_family = "firefox";
	_UserAgent_generation = 2;
}
if(!_UserAgent_family || _UserAgent_family=="")
{
	_UserAgent_family = "unknown";
	_UserAgent_generation = 0;
}