javascript - 팝업창 tab으로 열리는것 방지

     var winPop = 

window.open('','uservmmessage', "width=500, height=470, resizable=yes");

     document.searchFrm.action = "getPopup.do";

     document.searchFrm.method = "post";

     document.searchFrm.target = winPop.name;

     document.searchFrm.submit();

     winPop.focus();

     winPop.opener = self;