function ShowFormGuide(obj,GuideSentence) {
      // 入力案内を表示
      if( obj.value == '' ) {
         obj.value = GuideSentence;
         obj.style.color = '#808080';
      }
   }
   function HideFormGuide(obj,GuideSentence) {
      // 入力案内を消す
      if( obj.value == GuideSentence ) {
         obj.value='';
         obj.style.color = '#000000';
      }
   }