var ua = navigator.userAgent.toLowerCase()
var netscapebrowser = (ua.indexOf("mozilla")!=-1 && ua.indexOf("compatible")==-1 && ua.indexOf("opera")==-1)
var iebrowser = (ua.indexOf("msie")>-1)
var av = navigator.appVersion
var version = av.substring(0, av.indexOf(" ")) *1
var version2 = av.substring(0, av.indexOf(".")) *1
if (netscapebrowser)
 var versionsnummer = version2
 else if (iebrowser) {
  if (version2<4)
   versionsnummer=3
 if (version2==4 && ua.indexOf("msie 5")==-1)
 versionsnummer = 4
 if (version2==4 && ua.indexOf("msie 5")>-1)
 versionsnummer = 5
}

function dhtml_support() {
 return (document.layers || document.all || document.getElementById)
}

function dhtml_obj(id) {
  if (document.layers)
    return document.layers[id];
  else if (document.all)
    return document.all[id];
  else if (document.getElementById)
    return document.getElementById(id);
}

function dhtml_style(id) {
  if (document.layers)
    return dhtml_obj(id);
  else if (document.layers || document.getElementById)
    return dhtml_obj(id).style;
}

function dhtml_hide(id) {
  if (dhtml_support())
    dhtml_style(id).visibility = "hidden";
}
function dhtml_show(id) {
  if (dhtml_support())
    dhtml_style(id).visibility = "visible";
}

function dhtml_getX(id) {
  if (dhtml_support())
    if (document.layers || document.getElementById)
      return dhtml_style(id).left;
    else
      return dhtml_style(id).posLeft;
}
function dhtml_getY(id) {
  if (dhtml_support())
    if (document.layers || document.getElementById)
      return dhtml_style(id).top;
    else
      return dhtml_style(id).posTop;
}
function dhtml_setX(id, n) {
  if (dhtml_support())
    if (document.layers)
      dhtml_style(id).left = n;
    else if (document.getElementById)
      dhtml_style(id).left = n + "px";
    else
      dhtml_style(id).posLeft = n + "px";
}
function dhtml_setY(id, n) {
  if (dhtml_support())
    if (document.layers)
      dhtml_style(id).top = n;
    else if (document.getElementById)
      dhtml_style(id).top = n + "px";
    else
      dhtml_style(id).posTop = n + "px";
}