function onclick_check2() {
var popup_width = 400;
var popup_height = 350;
var popup_left = (screen.width - popup_width) / 2;
var popup_top = (screen.height - popup_height) / 2;
var popup_scrollbars = "no";
var popup_property = "width=" + popup_width;
var popup_property = popup_property + ",height=" + popup_height;
var popup_property = popup_property + ",left=" + popup_left;
var popup_property = popup_property + ",top=" + popup_top;
var popup_property = popup_property + ",scrollbars=" + popup_scrollbars;
window.open('<%=request.getContextPath()%>/commu/pop_post.jsp','zipcode',popup_property);
}