function close_win(){

  var nvua = navigator.userAgent;
alert(nvua.indexOf('MSIE'));
alert(nvua.indexOf('Gecko'));
  if(nvua.indexOf('MSIE') >= 0){
    if(nvua.indexOf('MSIE 5.0') == -1) {
      top.opener = '';
    }
  }
  else if(nvua.indexOf('Gecko') >= 0){
    top.name = 'CLOSE_WINDOW';
    wid = window.open('','CLOSE_WINDOW');
  }
  top.close();

}

function CloseWin(){
  window.opener = window;
  var win = window.open(location.href,"_self");
  win.close();
//  window.close();
}