function showCourse(which)
{  VideoOff(); RecipeOff();
   if (which == 1)
   {  var element = document.getElementById('Video1');
       element.style.display = 'block';
       element = document.getElementById('Recipe1');
       element.style.display = 'block';
   }
   else if (which == 2)
   {  var element = document.getElementById('Video2');
       element.style.display = 'block';
       element = document.getElementById('Recipe2');
       element.style.display = 'block';
   }
   else if (which == 3)
   {  var element = document.getElementById('Video3');
       element.style.display = 'block';
       element = document.getElementById('Recipe3');
       element.style.display = 'block';
   }
   else if (which == 4)
   {  var element = document.getElementById('Video4');
       element.style.display = 'block';
       element = document.getElementById('Recipe4');
       element.style.display = 'block';
   }
   else if (which == 5)
   {  var element = document.getElementById('Video5');
       element.style.display = 'block';
       element = document.getElementById('Recipe5');
       element.style.display = 'block';
   }
   else if (which == 6)
   {  var element = document.getElementById('Video6');
       element.style.display = 'block';
       element = document.getElementById('Recipe6');
       element.style.display = 'block';
   }
   else if (which == 7)
   {  var element = document.getElementById('Video7');
       element.style.display = 'block';
       element = document.getElementById('Recipe7');
       element.style.display = 'block';
   }
}

function VideoOff()
{  var element = document.getElementById('VideoIntro');
   element.style.display = 'none';
   element = document.getElementById('Video1');
   element.style.display = 'none';
   element = document.getElementById('Video2');
   element.style.display = 'none';
   element = document.getElementById('Video3');
   element.style.display = 'none';
   element = document.getElementById('Video4');
   element.style.display = 'none';
   element = document.getElementById('Video5');
   element.style.display = 'none';
   element = document.getElementById('Video6');
   element.style.display = 'none';
   element = document.getElementById('Video7');
   element.style.display = 'none';
}

function RecipeOff()
{  var element = document.getElementById('RecipeIntro');
   element.style.display = 'none';
   element = document.getElementById('Recipe1');
   element.style.display = 'none';
   element = document.getElementById('Recipe2');
   element.style.display = 'none';
   element = document.getElementById('Recipe3');
   element.style.display = 'none';
   element = document.getElementById('Recipe4');
   element.style.display = 'none';
   element = document.getElementById('Recipe5');
   element.style.display = 'none';
   element = document.getElementById('Recipe6');
   element.style.display = 'none';
   element = document.getElementById('Recipe7');
   element.style.display = 'none';
}