var openedDialogDefaultHeight = "";

function openDialog(dialogID, dialogCoverID) {
  var dialog = document.getElementById(dialogID);
  var dialogCover = document.getElementById(dialogCoverID);
  if (dialog) {
    dialog.style.display = "block";
    var dialogTop = document.documentElement.scrollTop + document.documentElement.clientHeight / 2 - parseInt(dialog.offsetHeight) / 2;
    dialogTop = (dialogTop <= 0) ? 5 : dialogTop;
    var dialogLeft = document.documentElement.scrollLeft + document.documentElement.clientWidth / 2 - parseInt(dialog.offsetWidth) / 2;
    dialogLeft = (dialogLeft <= 0) ? 5 : dialogLeft;
    dialog.style.top = dialogTop + "px";
    dialog.style.left = dialogLeft + "px";
    if (dialogCover) dialogCover.style.display = "block";
    openedDialogDefaultHeight = dialog.style.height;
    dialog.style.height = "";
  }
}

function closeDialog(dialogID, dialogCoverID) {
  var dialog = document.getElementById(dialogID);
  var dialogCover = document.getElementById(dialogCoverID);
  if (dialog) dialog.style.display = "none";
  if (dialogCover) dialogCover.style.display = "none";
  dialog.style.height = openedDialogDefaultHeight;
}

function openPopup(id) {
  var popup = document.getElementById(id);
  if(popup) {
    scrollbars.visible = false;
  }
}