if ( document.images )
{
  consultation_on = new Image ( );
  consultation_off = new Image ( );

  consultation_on.src = "/images/free-consultation_on.gif";
  consultation_off.src = "/images/free-consultation_off.gif";
}

{
  problems_on = new Image ( );
  problems_off = new Image ( );

  problems_on.src = "/images/tax-problems_on.gif";
  problems_off.src = "/images/tax-problems_off.gif";
}

{
  solutions_on = new Image ( );
  solutions_off = new Image ( );

  solutions_on.src = "/images/tax-solutions_on.gif";
  solutions_off.src = "/images/tax-solutions_off.gif";
}

{
  about_on = new Image ( );
  about_off = new Image ( );

  about_on.src = "/images/about-us_on.gif";
  about_off.src = "/images/about-us_off.gif";
}

{
  testimonials_on = new Image ( );
  testimonials_off = new Image ( );

  testimonials_on.src = "/images/testimonials_on.gif";
  testimonials_off.src = "/images/testimonials_off.gif";
}


function button_on ( imgName )
{
  if ( document.images )
  {
    butOn = eval ( imgName + "_on.src" );
    document[imgName].src = butOn;
  }
}

function button_off ( imgName )
{
  if ( document.images )
  {
    butOff = eval ( imgName + "_off.src" );
    document[imgName].src = butOff;
  }
}