function ShowFormGuide(obj,GuideSentence) {
   // 入力案内を表示
   if( obj.value == '' ) {
      obj.value = GuideSentence;
			obj.style.color = '#8b8b8b';
   }
}
function HideFormGuide(obj,GuideSentence) {
   // 入力案内を消す
   if( obj.value == GuideSentence ) {
      obj.value='';
			obj.style.color = '#4a4a4a';
   }
}