function check_login()
{
  var frm              = document.forms['login_form'];
   var userid            = Utils.trim(frm.elements['userID'].value);
  var email            = Utils.trim(frm.elements['email'].value);
  var msg = "";
  
  if (userid.length == 0)
  {
    msg += 'No eBay user ID.\n';
  }
  if (email.length == 0)
  {
    msg += 'No email address.\n';
  }
  else
  {
    if ( ! (Utils.isEmail(email)))
    {
      msg += 'Invalid email address.\n';
    }
  }
  if (msg.length > 0)
  {
    alert(msg);
    return false;
  }
  else
  {
    return true;
  }
}


var iMinSelected = 1;
var iMaxSelected = 5;

var iNumChecked = 0;
var iNumCheckedMark = 0;
function doCheck(ctrl) {
	
	if(ctrl.checked){
		iNumChecked++;
		
	} else {
		iNumChecked--;
		
	}
}
function doCheckMark(ctrl) {
	
	if(ctrl.checked){
		iNumChecked++;
		iNumCheckedMark++;
		
	} else {
		iNumChecked--;
		iNumCheckedMark--;		
	}
}
function check_term(){
  
	if (iNumChecked < iMinSelected) {
		alert('Please accept the term & conditions before checkout.');
	  return false;
	}
	

}

function check_item(){
  
	if (iNumChecked < iMinSelected) {
		alert('Please choose at least 1 item.');
	  return false;
	}
	 if (iNumChecked > iMaxSelected) {
		alert('You can only checkout at most 5 items in a parcel.');
	  return false;
     }
	 else if (iNumChecked > 1 && iNumCheckedMark > 0) {
		alert('Item with *** mark  will be shipped seperately, this item is not available for combined shipping.');
	  return false;
     }

}

function check_address(){
  var msg = "";

  if (document.address.name.value.length==0){
      msg += 'Please fill in your name.\n';

  }
  if (document.address.address1.value.length==0){
       msg += 'Please fill in your address.\n';

  }
   if (document.address.suburb.value.length==0){
       msg += 'Please fill in your suburb.\n';

  }
   if ((document.address.postcode.value.length==0) || (isNaN(document.address.postcode.value))){
	   msg += 'Please fill in an valid postcode.\n';
  }

  if (msg.length > 0)
  {
    alert(msg);
    return false;
  }
  else
  {
    return true;
  }
}