var mWin;

function CheckWindow(){
if( window.opener && !window.opener.closed ){
	window.opener.focus();
} else if (win_closed(mWin))  {
	mWin = window.open("http://gyre-omotesando.com","mWin");
	mWin.focus();
} else {
	mWin.focus();
}	
}

function win_closed(winVar) {
var ua = navigator.userAgent
if( !!winVar )
  if( ( ua.indexOf('Gecko')!=-1 || ua.indexOf('MSIE 4')!=-1 )
	   && ua.indexOf('Win')!=-1 ) 
	   return winVar.closed
  else return typeof winVar.document  != 'object'
else return true
}