function addShipping()
{

	var d = document.getElementById('amount').value;
    var parent = document.getElementById('paypaldiv');
	var s = document.getElementById('shipping');


    if (d == 15 || d == 17)
	  {
	  	if (s == null)
		{
		 var newinput = document.createElement('input');
		  newinput.setAttribute('name','shipping');
		  newinput.setAttribute('id','shipping');
		  newinput.setAttribute('type','hidden');
		  newinput.setAttribute('value','0.00');
		  parent.appendChild(newinput);
		  var newinput2 = document.createElement('input');
		  		  newinput2.setAttribute('name','shipping2');
		  		  newinput2.setAttribute('id','shipping2');
		  		  newinput2.setAttribute('type','hidden');
		  		  newinput2.setAttribute('value','0.00');
		  parent.appendChild(newinput2);
		  }
	  }
  	else
	  {

		if (s != null)
		{


			  parent.removeChild(s);
			  s = document.getElementById('shipping2');
			  parent.removeChild(s);
		}
	}

}