// Scripts by Stuart Smale

function toggle_visibility(id) {
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
    }
	
function peek(overdivid, underdivid){ 
  document.getElementById(overdivid).style.backgroundPosition = "right";
  document.getElementById(underdivid).style.display = "block";
} 
function unpeek(divid){ 
  document.getElementById(divid).style.backgroundPosition = "left";
} 
function reveal(overdivid, underdivid){ 
  document.getElementById(overdivid).style.display = "none";
  document.getElementById(underdivid).style.display = "block";
} 
function button_over(buttondivid) {
  document.getElementById(buttondivid).style.backgroundPosition = "right";
}
function button_off(buttondivid) {
  document.getElementById(buttondivid).style.backgroundPosition = "left";
}
function clicked(clickdivid) {
	document.getElementById(clickdivid).style.display = "block";
}