function SetFocus(fieldname,formname){if (formname == ''){ formname = 'form'; }if (eval("document."+formname+".elements[fieldname].value == ''")){ eval("document."+formname+".elements[fieldname].focus();"); }}

function FormAction(obj, form_name, form_action) {
  // switch image, disable button
  var alt_image = new Image();
  alt_image.src = 'images/btn_in_progress.gif';
  obj.src       = alt_image.src;
  obj.disabled  = true;
  
  // set action and submit
  frm = eval('document.'+form_name);
  frm.form_action.value = form_action;
  frm.submit();
}