/****************************************************************************/

/* stopwatch.js                   (C) Copyright 1999 by Calocybe Creations  */

/*                                                                          */

/* Simple stopwatch object                                                  */

/*                                                                          */

/* Compatibility: Unknown, assume JavaScript1.1                             */

/*                                                                          */

/* This version: 1999-08-15 / 1736                                          */

/*                                                                          */

/* You may use, copy or redistribute this code for your own purposes        */

/* as long as this copyright notice remains intact. You may also modify the */

/* code, provided that you insert unambiguous notices stating that you      */

/* changed the code.                                                        */

/*                                                                          */

/* Authors contact: calocybe@geocities.com                                  */

/*                                                                          */

/****************************************************************************/



/* constants  (or what would be constants in C, respectively) */

var SW_STATUS_PAUSING = 0;

var SW_STATUS_RUNNING = 1;







function CStopWatch() {

    this.Start = CStopWatch_Run;

    this.Stop = CStopWatch_Stop;

    this.Reset = CStopWatch_Reset;

    this.GetElapsedTime = CStopWatch_GetElapsedTime;

    this.GetElapsedSeconds = CStopWatch_GetElapsedSeconds;



    this.Reset();

}







function CStopWatch_Reset() {

    this.status = SW_STATUS_PAUSING;

    this.elapsed = 0;

    this.starttime = 0;

}







function CStopWatch_Run() {

    var now;



    if (this.status == SW_STATUS_PAUSING) {

        now = new Date();

        this.starttime = now.getTime()

        this.status = SW_STATUS_RUNNING;

    }

}







function CStopWatch_Stop() {

    var now;



    if (this.status == SW_STATUS_RUNNING) {

        now = new Date();

        this.elapsed += now.getTime() - this.starttime;

        this.starttime = 0;

        this.status = SW_STATUS_PAUSING;

    }

}





function CStopWatch_GetElapsedTime() {

    return (new Date(this.GetElapsedSeconds()));

}





function CStopWatch_GetElapsedSeconds() {

    var now;



    if (this.status == SW_STATUS_RUNNING) {

        now = new Date();

        return this.elapsed + now.getTime() - this.starttime;

    } else if (this.status == SW_STATUS_PAUSING)  return this.elapsed;



    return null;

}