var bookWindow;

function newWindow(link) {
  bookWindow = window.open(link, "new1", "width=580,height=418");
  if (bookWindow.open) {
    bookWindow.close;
  }
  bookWindow.focus();
}

function newWindow2(link) {
  bookWindow = window.open(link, "new2", "width=579,height=853");
  if (bookWindow.open) {
    bookWindow.close;
  }
  bookWindow.focus();
}

function newWindow3(link) {
  bookWindow = window.open(link, "new3", "width=575,height=847");
  if (bookWindow.open) {
    bookWindow.close;
  }
  bookWindow.focus();
}

function newWindow4(link) {
  bookWindow = window.open(link, "new4", "width=560,height=450");
  if (bookWindow.open) {
    bookWindow.close;
  }
  bookWindow.focus();
}

function newWindow5(link) {
  bookWindow = window.open(link, "new5", "width=512,height=800");
  if (bookWindow.open) {
    bookWindow.close;
  }
  bookWindow.focus();
}