function showDetailsBox()
		{
			hideAllSources();
			
			var eltSelect = document.getElementById('hearCat');
			var val = '';
			
			if (eltSelect != null)
			{
				val = eltSelect.value;
			}
			
			if ( val != null && val.length > 0 )
			{
				document.getElementById('detail'+val).style.display = 'block';
				document.getElementById('hide_'+val.toLowerCase()).value = 'false';
				
				// Set the radio required
				set_required( [val.toLowerCase()] );
			}
		}
		
		
		function hideAllSources() 
		{
			//Hide all the how did you hear about us radio buttons
			document.getElementById('detailAssoc').style.display = 'none';
			document.getElementById('detailBook').style.display = 'none';
			document.getElementById('detailMail').style.display = 'none';
			document.getElementById('detailEmail').style.display = 'none';
			document.getElementById('detailExhibition').style.display = 'none';
			document.getElementById('detailNewspaper').style.display = 'none';
			document.getElementById('detailMagazine').style.display = 'none';
			document.getElementById('detailTouristOffice').style.display = 'none';
			document.getElementById('detailTV').style.display = 'none';
			document.getElementById('detailSearch').style.display = 'none';
			document.getElementById('detailPromotion').style.display = 'none';
			document.getElementById('detailOther').style.display = 'none';
			
			document.getElementById('hide_assoc').value = 'true';
			document.getElementById('hide_book').value = 'true';
			document.getElementById('hide_mail').value = 'true';
			document.getElementById('hide_email').value = 'true';
			document.getElementById('hide_exhibition').value = 'true';
			document.getElementById('hide_newspaper').value = 'true';
			document.getElementById('hide_magazine').value = 'true';
			document.getElementById('hide_touristoffice').value = 'true';
			document.getElementById('hide_tv').value = 'true';
			document.getElementById('hide_search').value = 'true';
			document.getElementById('hide_promotion').value = 'true';
			document.getElementById('hide_other').value = 'true';
			
			unset_required(['assoc']);
			unset_required(['book']);
			unset_required(['mail']);
			unset_required(['email']);
			unset_required(['exhibition']);
			unset_required(['newspaper']);
			unset_required(['magazine']);
			unset_required(['touristoffice']);
			unset_required(['tv']);
			unset_required(['search']);
			unset_required(['promotion']);
			unset_required(['other']);
			
			
		}