function track(site_id) {
var days = 7; // Number of days to keep cookie alive
    var ru = document.location.href;
    var rf = document.referrer;

    var rest = '';
    if( ru.length > 0 ) {
        if( rf == '' ) {
            rf = '-';
        } else {
            rf = urlencode( rf );
        }

        // If there's a query string, grab it and stick all the parameters on the
        // end.
        var qstring = ru.split( '?' );
        if( qstring.length > 1 ) {
            rest = qstring[ 1 ];
        }

        ru = urlencode( ru );
        rf = urlencode( rf );
        var clicked_time = new Date();
        clicked_time = Math.round(clicked_time.getTime()/1000);

        // Build data.
        var d = 'rf=' + rf;
        if( ru.length > 0 ) {
            d += '&ru=' + ru;

       }
        if( rest.length > 0 ) {
            d += '&' + rest;
        }
        d += '&ct=' + clicked_time;
		
		if(site_id.length > 0)
		{
			d += '&site_id=' + site_id;
		}

        // If the cookie already exists for this bonus code, this isn't a unique hit
        var unique = 1;
        old_cookie = readCookie( 'analytics_unique' );
        if( old_cookie != null && old_cookie != "" ) {
            unique = 0;
        }

        // Set cookie.
        setCookie( 'analytics_unique', 'visited', days, '/' ); // For uniqueness

        d += '&u=' + unique;
        // Now request the 1x1 pixel gif to record the click.
        (new Image()).src =  'http://www.betterlabs.net/nirmal34/trac.php?' + d;
    }
    return true;
}

function setCookie( name, value, days, path ) {
    var date = new Date();
    date.setTime( date.getTime() + ( days*24*60*60*1000 ) );
    var expires = "; expires=" + date.toGMTString();
    document.cookie = name + '=' + value + expires + '; path=' + path;
}

function readCookie(cookieName) {
    var theCookie=""+document.cookie;
    var ind=theCookie.indexOf(cookieName);
    if (ind==-1 || cookieName=="") return "";
    var ind1=theCookie.indexOf(';',ind);
    if (ind1==-1) ind1=theCookie.length;
    return unescape(theCookie.substring(ind+cookieName.length+1,ind1));
}

function deleteCookie( cookieName ) {
    if( readCookie( cookieName ) ) {
        setCookie( cookieName, '', 0, '/' );
    }
}

function urlencode(str) {
	str = encodeURIComponent(str);
/*    str = escape(str);
    str = str.replace(/\+/g, '%2B');
    str = str.replace(/%20/g, '+');
    str = str.replace(/\*/
					  /*g, '%2A');
    str = str.replace(/\//g, '%2F');
    str = str.replace(/@/g, '%40');*/
    return str;
}