cript">
      var a = document.getElementById("area"), bad = Object.create(null);
      var chars = "a~`!@#$%^&*()-_=+}{[]\\|'\"/?.>,<:;", l = chars.length;
      for (var x = 0; x < l; ++x) for (var y = 0; y < l; ++y) {
        var s1 = "foooo" + chars.charAt(x), s2 = chars.charAt(y) + "br";
        a.appendChild(document.createTextNode(s1 + s2));
        var h1 = a.offsetHeight;
        a.innerHTML = "";
        a.appendChild(document.createElement("span")).appendChild(document.createTextNode(s1));
      