function checkForm(form, span, formAction)
{
	senddata = true;
	noempties = true;
	
	for (i=0; i<form.length; i++)
	{				
		if(form.elements[i].name == 'email')
		{
			
			// check if it has a value in the format of an email address
			if ( form.elements[i].value.length < 4 || form.elements[i].value.indexOf("@") < 0 || form.elements[i].value.indexOf(".")<0)
			{
				noempties = false;
				senddata = false;
				
				document.getElementById(span).innerHTML = "please enter your: " + form.elements[i].name;
				form.elements[i].focus();
				return 0;	
			}
						
		}
		
		
		if (form.elements[i].value.length < 1 && noempties &&  form.elements[i].name != "verstopt" )
		{		
			
			noempties = false;
			senddata = false;
			
			document.getElementById(span).innerHTML = "please enter your: " + form.elements[i].name;
			form.elements[i].focus();
			return 0;
		}
		
		
		
	}
	
	if (senddata)
	{
		form.action=formAction;
		form.submit();
	}
	return 0;
}