//<![CDATA[
var _cookie =
{
    Get: function(Name)
    {
        try
        {
            var start = document.cookie.indexOf(Name + '=');
            var len = start + Name.length + 1;

            if ((!start) && (Name != document.cookie.substring(0, Name.length))) { return null; }
            if (start == -1) { return null; }

            var end = document.cookie.indexOf(';', len);

            if (end == -1) end = document.cookie.length;

            return unescape(document.cookie.substring(len, end));
        }
        catch (e)
        {
            return null;
        }
    },

    Set: function(Name, Value, Expires, Path, Domain, Secure)
    {
        try
        {
            var today = new Date();

            today.setTime(today.getTime());

            if (Expires) { Expires = Expires * 1000 * 60 * 60 * 24; }

            var expires_date = new Date(today.getTime() + (Expires));

            document.cookie = Name + '=' + escape(Value) + ((Expires) ? ';expires=' + expires_date.toGMTString() : '') + ((Path) ? ';path=' + Path : '') + ((Domain) ? ';domain=' + Domain : '') + ((Secure) ? ';secure' : '');
        }
        catch (e) {}
    }
};

function _nvTrackIT()
{
	var _nvSitePath = '';
	var _nvImage = new Image();
	var _nvTDY = new Date();
	var _nvSID = '';
	var _nvREF = '';
	var _nvSRC = '';
	var _nvPG = '';
	
	if(location.href.indexOf('https:') == 0)
	{
		_nvSitePath = 'https://env.nvasys.com/nvtracker/';
	}
	else
	{
		_nvSitePath = 'http://env.nvasys.com/nvtracker/';
	}
	
	if(typeof SID == 'undefined')
	{
		_nvSID = _cookie.Get('_nvsid');
	    
		if(!_nvSID)
		{
			_nvSID = _nvTDY.getTime().toString() + (1 + Math.floor((Math.random() * 9999999999))).toString();
			
			_cookie.Set('_nvsid', _nvSID);
		}
	}
	else
	{
		_nvSID = SID;
	    
		_cookie.Set('_nvsid', _nvSID);
	}
    
    _nvREF = escape(document.referrer);
    _nvSRC = document.getElementById('nv_').src;

    if(_nvSRC.indexOf('?pg=') > -1)
    {
        _nvPG = _nvSRC.substring(_nvSRC.indexOf('?pg=') + 4);
    }

    _nvImage.height = 0;
    _nvImage.width = 0;
    _nvImage.src = _nvSitePath + 'trackit.aspx?sid=' + _nvSID + '&ref=' + _nvREF + '&pg=' + _nvPG //+ '&dt=' + _nvTDY;
	
    setTimeout('_nvTrackIT();', 4999);
}

_nvTrackIT();
//]]>