addEvent(window, 'load',CloseButton);//閉じボタン。

function CloseButton() {//閉じるボタンを挿入。
   if(!document.getElementById){return;}
   var close_button = document.getElementById('CloseButton');
   if(!window.opener || window.opener.closed){
      close_button.firstChild.nodeValue= "戻る";
   }else{
	  var text = ( window.name != "OpenWin" ) ?"戻る" :"閉じる"; 
	  close_button.firstChild.nodeValue= text;
   }
   close_button.style.cursor = "pointer";
   addEvent( close_button, 'click', ReturnParentWindow ,false);
}