function setFocus() {
  var allForms = document.forms;
  var found = false;
  
  for (var i = 0; i <= allForms.length && !found; i++) {
    var currentForm = allForms[i];
    if (currentForm) {
      var fields = currentForm.all;
    
      for (var j = 0; j <= fields.length && !found; j++) {
        var field = fields.item(j);
        if (((field.type == "text") || 
            (field.type == "textarea") || 
            (field.type == "select-one") || 
            (field.type == "password")) && (field.disabled != true)) {
          field.focus();
          found = true;
        }
      }
    }
  }
}