function required_select(element_name, element_value)
{
	
	if(element_value == 0)
	{
		return false;	
	}
	
	return true;
	
}

function CheckQuestions()
{
	
	aChecked = new Array();
	
	aFormElements = document.questions;
	
	ElementName = null;
	
	QuestionChecked = false;
		
	for(i = 0; i < aFormElements.length; i++)
	{
		ElementName = aFormElements[i]['name'];
		
		if(ElementName != 'submit')
		{
			if(!CheckRadio(ElementName))
			{
				alert('U heeft niet alle vragen beantwoord');	
				return false;
			}
		}
	}
	
	return true;	
}

function CheckRadio(ElementName)
{
	var radio_choice = false;
	
	radio_button = eval('document.questions.' + ElementName);
	
	for(a = 0; a < radio_button.length; a++)
	{
		if(radio_button[a].checked)
		{
			radio_choice = true;
		}
	}
	
	return radio_choice;
}