/* FORM PLUGIN to add a hidden field to a form */

function fpAddField(objForm, strFieldID, strFieldVal) {
  var F;
  if (typeof(objForm) == 'string') {
  	objForm = document.forms[objForm];
  }
  
  if (F = document.getElementById(strFieldID)) {
  	F.value = strFieldVal;
  } else {
    F = document.createElement("INPUT");
    F.id = strFieldID;
    F.name = strFieldID;
    F.value = strFieldVal;
    F.type = "hidden";
    //F.size = 20;
    objForm.appendChild(F);
  }
 
}