<!--

//*****  NIDA Website browser checker.  *************************************


// Set browser user agent (converting to lowercase to simplify testing.)
var agt=navigator.userAgent.toLowerCase();

// Set browser version.
var is_major = parseInt(navigator.appVersion);
//var is_minor = parseFloat(navigator.appVersion);

//Set browser brand variables.
var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
            && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
            && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
var is_nav4only = (is_nav && (is_major >= 4) && (is_major < 5));
var is_nav6up = (is_nav && (is_major >= 5));


//***************************************************************************

//-->