//***Browser Sniff******************************************************
var agt = navigator.userAgent.toLowerCase();

var is_major	= parseInt(navigator.appVersion);
var is_minor	= parseFloat(navigator.appVersion);
var is_nav		= ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
					&& (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
		            && (agt.indexOf('webtv')==-1));
var is_nav2		= (is_nav && (is_major == 2));
var is_nav3		= (is_nav && (is_major == 3));
var is_nav4		= (is_nav && (is_major == 4));
var is_nav4up	= (is_nav && (is_major >= 4));
var is_navonly  = (is_nav && ((agt.indexOf(";nav") != -1) 
					|| (agt.indexOf("; nav") != -1)) );
var is_nav5		= (is_nav && (is_major == 5));
var is_nav5up	= (is_nav && (is_major >= 5));
var is_moz7		= (agt.indexOf('0.7')!=-1)
var is_ie		= (agt.indexOf("msie") != -1);
var is_ie3		= (is_ie && (is_major < 4));
var is_ie4		= (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")==-1) );
var is_ie4up	= (is_ie  && (is_major >= 4));
var is_ie5		= (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
var is_ie5up	= (is_ie  && !is_ie3 && !is_ie4);
var is_win		= ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) );
var is_mac		= (agt.indexOf("mac")!=-1);

//alert(is_nav4up);
//************************************************************************