function ShowHide(ctrlID)
{
 var ctrl = document.getElementById('div' + ctrlID);

 if (ctrl.style.display == 'none')
 {
  ctrl.innerHTML = '<embed src="video/prod' + ctrlID + '.wmv" autostart="false" />';
  ctrl.style.display = 'block';
 }
 else
 {
  ctrl.style.display = 'none';
  ctrl.innerHTML = '';
 }
}