popupWindow = null;
artParams = "resizeable,scrollbars,width=420,height=560,top=0,left=20";
mapParams = "resizeable,scrollbars,width=450,height=490,top=0,left=20";
dobokParams = "resizeable,scrollbars,width=800,height=540,top=0,left=20";
merchParams = "resizeable,scrollbars,width=720,height=270,top=0,left=20";
smEventParams = "resizeable,scrollbars,width=350,height=150,top=0,left=20";
mdEventParams = "resizeable,scrollbars,width=350,height=300,top=0,left=20";
lgEventParams = "resizeable,scrollbars,width=350,height=450,top=0,left=20";
function openWindow(html, params) {
  closeWindow();
  popupWindow = window.open(html, "popup", params);
}
    
function closeWindow() {
  if (popupWindow) {
    if (!popupWindow.closed) popupWindow.close();
    popupWindow = null;
  }
}