[ JavaScript ] window.close() / self.close()

if (/MSIE/.test(navigator.userAgent)) {
   //Explorer 7이상일때
   if(navigator.appVersion.indexOf("MSIE 7.0")>=0) {
      window.open("about:blank","_self").close();
   }
   //Explorer 7이하일때
   else {
      window.opener = self;
      self.close();
   }
}
 
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window.open("","_self").close();