// - - - - - - - - - - แสดง Popup กลางจอ - - - - - - - - - - //
function popUp(URL,win_width,win_height) {
day = new Date();
id = day.getTime();

win_left = (screen.width/2)-(win_width/2);
win_top = (screen.height/2)-(win_height/2);

eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width="+win_width+",height="+win_height+",left = "+win_left+",top = "+win_top+"');");
}