function checkForm() {
  if(document.ordering.quantity.value == 0 || document.ordering.quantity.value=="")
    {
      alert("Please order at least 1 CD!");
      document.ordering.quantity.value="1";
      return false;
    }
  if(document.ordering.name.value == "")
    {
      alert("Please enter your name!");
      document.ordering.name.focus();
      return false;
    }
  if(document.ordering.surname.value == "")
    {
      alert("Please enter your surname!");
      document.order.surname.focus();
      return false;
    }
  if(document.ordering.address.value == "")
    {
     alert("Please enter your street/housenumber!");
     document.ordering.address.focus();
     return false;
    }
  if(document.ordering.zip.value == "")
    {
      alert("Please enter your Zip Code!");
      document.ordering.zip.focus();
      return false;
    }
  if(document.ordering.city.value == "")
    {
      alert("Please enter your city!");
      document.ordering.city.focus();
      return false;
    }
  if(document.ordering.country.value == "void")
    {
      alert("Please select your Country!");
      document.ordering.country.focus();
      return false;
    }
	if(document.ordering.email.value == "")
  	{
    	alert("Please enter your Email!");
    	document.ordering.email.focus();
    	return false;
  	}
	if(document.ordering.agb.checked == false) 
	  { 
      alert("You have to accept the Terms and conditions!");
      document.ordering.agb.focus();
      return false;
    }
}