function toggleConditionForm(){
 var n = document.getElementById("normal_form");
 var a = document.getElementById("advanced_form");
 n.style.display == "none" ? n.style.display = "block" : n.style.display = "none";
 a.style.display == "none" ? a.style.display = "block" : a.style.display = "none";
}
function paging(page) {
  document.pager.p.value = page;
  document.pager.submit();
}
function sort(key,dir) {
  document.pager.sort_key.value = key;
  document.pager.sort_dir.value = dir;
  paging(1);
}
function eraseTitle(obj){
  if (obj.value == "ゲームタイトル"){
    obj.value = '';
    obj.style.color = 'black';
  }
}