function getObject(obj) {
  if ( document.getElementById ) {
    obj = document.getElementById( obj );
	
  } else if ( document.all ) {
    obj = document.all.item( obj );
	
  } else {
    obj = null;
  }
  return obj;
}

function displayObject( obj, show )
{
	obj = getObject( obj );
	if (obj==null) return;
	
	if(show == true)
	{
		obj.style.display = show ? 'block' : 'block';
		obj.style.visibility = show ? 'visible' : 'visible';
	}
	
	if(show == false)
	{
		obj.style.display = show ? 'block' : 'none';
		obj.style.visibility = show ? 'visible' : 'hidden';
	}
}

function checkMail(field)
{
	var x =  document.getElementById(field).value;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)){
		return true;
	}else{
		alert('E-post adressen er ikke gyldig.');
		return false;
	}
}

function formcheck(btn){
	if(btn == 'clear'){
		document.getElementById('add').action = "clearbasket.php";
	}else if(btn == 'next'){
		document.getElementById('add').action = "form.php";	
	}
}

function check()
{

	var valid = true;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	var filter2  = /^[0-9]/;
	
	var email = document.getElementById('formemail').value;
	
	if (filter.test(email)){
		document.getElementById('emailimg').src='Images/Norsk/yes.gif';
	}else{
		document.getElementById('emailimg').src='Images/Norsk/no.gif';
			valid = false;
	}
	
	var email2 = document.getElementById('formemail2').value;
	if(email2 != email){
		document.getElementById('email2img').src='Images/Norsk/no.gif';
		valid = false;
	}else{
		if(email2 != ""){
			document.getElementById('email2img').src='Images/Norsk/yes.gif';
		}else{
			document.getElementById('email2img').src='Images/Norsk/no.gif';
			valid = false;
		}
	}
	
	var name = document.getElementById('name').value;
	if(name == ""){
		document.getElementById('nameimg').src='Images/Norsk/no.gif';
		valid = false;
	}else{
		document.getElementById('nameimg').src='Images/Norsk/yes.gif';
	}
	
	var surname = document.getElementById('surname').value;
	if(surname == ""){
		document.getElementById('surnameimg').src='Images/Norsk/no.gif';
		valid = false;
	}else{
		document.getElementById('surnameimg').src='Images/Norsk/yes.gif';
	}
	
	var address = document.getElementById('address').value;
	if(address == ""){
		document.getElementById('addressimg').src='Images/Norsk/no.gif';
		valid = false;
	}else{
		document.getElementById('addressimg').src='Images/Norsk/yes.gif';
	}
	
	var zipcode = document.getElementById('zipcode').value;
	if (filter2.test(zipcode)){
		document.getElementById('zipcodeimg').src='Images/Norsk/yes.gif';
	}else{
		document.getElementById('zipcodeimg').src='Images/Norsk/no.gif';
		valid = false;
	}
	
	var locality = document.getElementById('locality').value;	
	if(locality == ""){
		document.getElementById('localityimg').src='Images/Norsk/no.gif';
		valid = false;
	}else{
		document.getElementById('localityimg').src='Images/Norsk/yes.gif';
	}
	
	var phone = document.getElementById('phone').value;
	if (filter2.test(phone)){
		document.getElementById('phoneimg').src='Images/Norsk/yes.gif';
	}else{
		document.getElementById('phoneimg').src='Images/Norsk/no.gif';
		valid = false;
	}
	
	return valid;
}