function checkIfAnotherEnquiryHasBeenSelected()
{
  var oSelect = document.getElementsByName("enquiry")[0];

  if(oSelect.value == -1)
  {
    var oEnquiry = document.createElement("input");

    oEnquiry.type = "text";
    oEnquiry.className = "field";
    oEnquiry.name = "otherEnquiry";
    oEnquiry.id   = "otherEnquiry";

    var oContainer = document.createElement("div");
    oContainer.style.marginRight = "1em";
    oContainer.style.display = "inline";
    oContainer.id = "otherEnquiryContainer"

    oContainer.appendChild(oEnquiry);
    document.getElementById("enquirySelect").insertBefore(oContainer, oSelect);
  }
  else if(oSelect.value != "")
  {
    oContainer = document.getElementById("otherEnquiryContainer");

    if(oContainer)
    {
      document.getElementById("enquirySelect").removeChild(oContainer);
    }
  }
}