function swaponwind()
 {
      document.bnrwind.src="images/energyconsulting-wind-on.jpg";

 }
function swapoffwind()
 {
      document.bnrwind.src="images/energyconsulting-wind.jpg";

 }


function swaponsolar()
 {
      document.bnrsolar.src="images/energyconsulting-solar-on.jpg";

 }
function swapoffsolar()
 {
      document.bnrsolar.src="images/energyconsulting-solar.jpg";

 }


function swapongasfired()
 {
      document.bnrgasfired.src="images/energyconsulting-gasfired-on.jpg";

 }
function swapoffgasfired()
 {
      document.bnrgasfired.src="images/energyconsulting-gasfired.jpg";

 }