var ck_name = /^[A-Za-z0-9 ]{3,20}$/;
	var ck_email = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i 	
	
	function validate(form){
	var name = form.name.value;
	var email = form.email.value;	  
	  
	 var errors = [];
	 
	 if (!ck_name.test(name)) {
	  errors[errors.length] = "Er is geen naam ingevoerd";
	 }
	  
	 if (!ck_email.test(email)) {
	  errors[errors.length] = "Het e-mailadres is niet geldig.";
	 }	 
	 
	 if (errors.length > 0) {
	  reportErrors(errors);
	  return false;
	 }
	 
	 return true;
	}
	
	function reportErrors(errors){
	 var msg = "De onderstaande punten zijn niet correct:\n";
	 for (var i = 0; i<errors.length; i++) {
	  var numError = i + 1;
	  msg += "\n" + numError + ". " + errors[i];
	 }
	 alert(msg);
	}