function SubmitSearchFormHomepage(){
			var option_selected = false;
			
			if (document.getElementById('search_presentationtype_18').checked)
								option_selected = true;
						if (document.getElementById('search_presentationtype_19').checked)
								option_selected = true;
						
			
			if (!option_selected)
			{
				alert('Selecteer een soort presentatie');
			}
			else
				document.getElementById('search_form_homepage').submit();
	}

	function SubmitSearchFormHomepageNew(){
			var option_selected = false;
			var result = document.getElementById('search_presentationtype').value;
			if (result != "")
			{
				option_selected = true;
			}
			
			if (!option_selected)
			{
				alert('Selecteer een soort presentatie');
			}
			else
				document.getElementById('search_form_homepage').submit();
	}