function mouseOver_toggle_blue(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open2.png';
      }
      else {
      i.src = 'IMG/triangle_closed2.png';
      }
}

function mouseOut_toggle_blue(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open.png';
      }
      else {
      i.src = 'IMG/triangle_closed.png';
      }
}


// Show or hide the element with the given 'id':
function refbase_toggleVisibilitySlide(id, imgid) {
	var e = document.getElementById(id);
	var i = document.getElementById(imgid);
	if (e.style.display == 'block' || e.style.display == '') {
		//if (upd) 
		e.style.display = 'none';
		i.src = 'IMG/triangle_closed.png';
      		i.title = 'Abstract'		
	}
	else {
		e.style.display = 'block';
		i.src = 'IMG/triangle_open.png';
      		i.title = 'Hide Abstract'
	}
}


function mouseOver_toggle_yellow(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open_yellow2.png';
      }
      else {
      i.src = 'IMG/triangle_closed_yellow2.png';      
      }
}

function mouseOut_toggle_yellow(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open_yellow.png';
      }
      else {
      i.src = 'IMG/triangle_closed_yellow.png';      
      }
}

function refbase_toggleVisibilitySlide_yellow(id, imgid) {
	var e = document.getElementById(id);
	var i = document.getElementById(imgid);
	if (e.style.display == 'block' || e.style.display == '') {

		e.style.display = 'none';
		i.src = 'IMG/triangle_closed_yellow.png';
		i.title = 'Plain Language Summary'
	}
	else {
		e.style.display = 'block';
		i.src = 'IMG/triangle_open_yellow.png';
		i.title = 'Hide Plain Language Summary'
	}
}


function mouseOver_toggle_content(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open2.png';
      }
      else {
      i.src = 'IMG/triangle_closed2.png';      
      }
}

function mouseOut_toggle_content(id,imgid) {	
  var e = document.getElementById(id);
  var i = document.getElementById(imgid);
  if (e.style.display == 'block' || e.style.display == '') {
      i.src = 'IMG/triangle_open.png';
      }
      else {
      i.src = 'IMG/triangle_closed.png';      
      }
}

function refbase_toggleVisibilitySlide_content(id, imgid) {
	var e = document.getElementById(id);
	var i = document.getElementById(imgid);
	if (e.style.display == 'block' || e.style.display == '') {

		e.style.display = 'none';
		i.src = 'IMG/triangle_closed.png';
		i.title = 'Chapter Contents'
	}
	else {
		e.style.display = 'block';
		i.src = 'IMG/triangle_open.png';
		i.title = 'Hide Chapter Contents'
	}
}