function toggleHome(open,close){
	// if the Div is hidden - make is visable.
	if(document.getElementById(open).style.display=='none'){
		// the div is currently closed, close the other div,  then open the called div
		document.getElementById(open +'Tab').src = 'images/'+ open +'_on.jpg';
		document.getElementById(close +'Tab').src = 'images/'+ close +'_off.jpg';
		document.getElementById(close).style.display='none';
		document.getElementById(open).style.display='block';
	}// else { is it open already,  do nothing. }
}