function formCheck(formobj){
	// name of mandatory fields
	var fieldRequired = Array("saluation", "first_name", "last_name", "email", "phone" , "00N20000001yK4J" , "00N20000001yK4O");
	// field description to appear in the dialog box
	var fieldDescription = Array("Salutation", "Voornaam", "Achternaam", "E-mail", "Telefoon" , "naam Jarige" , "Leeftijd jarige" );
	// dialog message
	var alertMsg = "De volgende velden dienen ingevuld te worden:\n";
	
	var l_Msg = alertMsg.length;
	
	for (var i = 0; i < fieldRequired.length; i++){
		var obj = formobj.elements[fieldRequired[i]];
		if (obj){
			if (obj.type == null){
				var blnchecked = false;
				for (var j = 0; j < obj.length; j++){
					if (obj[j].checked){
						blnchecked = true;
					}
				}
				if (!blnchecked){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				continue;
			}

			switch(obj.type){
			case "select-one":
				if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "select-multiple":
				if (obj.selectedIndex == -1){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			case "text":
			case "textarea":
				if (obj.value == "" || obj.value == null){
					alertMsg += " - " + fieldDescription[i] + "\n";
				}
				break;
			default:
			}
		}
	}

	if (alertMsg.length == l_Msg){
		return true;
	}else{
		alert(alertMsg);
		return false;
	}
}
	
				
	var options = {
		// Options
		
		container: 'image-holder',
		play: 'play',
		pause: 'stop',
		previous: 'prev',
		next: 'next',
		speed: 8000
	};