//DOM detection and creating objects

var doc,doc2,doc3,sty;
var n4, ie, n6;

if (document.layers) {
  doc = "document.";
  doc2 = ".document.";
  doc3 = "";
  sty = "";
  n4 = true;
  }
else if (document.all) {
  doc = "document.all.";
  doc2 = "";
  doc3 = "";
  sty = ".style";
  ie = true;
}
else if (document.getElementById) {
  doc = "document.getElementById('";
  doc2 ="')";
  doc3 ="')";
  sty = "').style";
  n6 = true;
}