window.open

var url = "${_contextPath}/message/messageContent/select.do";
var winWidth = (window.screen.width-1000) / 2;
var winHeight = (window.screen.height - 300) / 2;
window.open(url,"","height=300,width=1000,top=" + winHeight + ",left=" + winWidth + ",toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no,status=no");