var html = Array();
var trs = "";

function start()  {
  if(document.getElementById && document.getElementById("timg")) {
    trs = document.getElementById("timg").getElementsByTagName("tr");
    for(i=0; i < trs.length; i++) {
      html[i] = trs[i].getElementsByTagName("td")[1].getElementsByTagName("span")[0].firstChild.nodeValue;
    }

    document.getElementById("but").className = "visible";
  }
}

function xhtmlOn()  {
  document.getElementById("html").style.borderStyle = "outset";
  document.getElementById("xhtml").style.borderStyle = "inset";
  for(i=0; i < trs.length; i++) {
    trs[i].getElementsByTagName("td")[1].getElementsByTagName("span")[0].firstChild.nodeValue = html[i].replace(/><\/a><\/p>/, " /></a></p>");
  }
}

function htmlOn()  {
  document.getElementById("xhtml").style.borderStyle = "outset";
  document.getElementById("html").style.borderStyle = "inset";
  for(i=0; i < trs.length; i++) {
    trs[i].getElementsByTagName("td")[1].getElementsByTagName("span")[0].firstChild.nodeValue = html[i];
  }
}