// show hide layers

<!--
function toggleBox(szDivID, iState) // 1 visible, 0 hidden
{
    if(document.layers)	   //NN4+
    {
       document.layers[szDivID].visibility = iState ? "show" : "hide";
    }
    else if(document.getElementById)	  //gecko(NN6) + IE 5+
    {
        var obj = document.getElementById(szDivID);
        obj.style.visibility = iState ? "visible" : "hidden";
    }
    else if(document.all)	// IE 4
    {
        document.all[szDivID].style.visibility = iState ? "visible" : "hidden";
    }
}
// -->

function showhide(){
	var body = document.getElementsByTagName('body')[0];
	var spans = body.getElementsByTagName("span");
	var span;
	if (span.className == 'emailadres') {
      var spantags = document.getElementsByTagName('span');
  var stlength = spantags.length;
  for (i = stlength - 1; i >= 0; i--) {
    if (spantags[i].className == 'emailadres') {
      var address = spantags[i].childNodes[0].nodeValue + spantags[i].childNodes[2].nodeValue;
      var mailto = document.createElement('a');
      mailto.setAttribute('href', 'mailto:' + address);
      mailto.appendChild(document.createTextNode(address));
      spantags[i].parentNode.replaceChild(mailto, spantags[i]);
	} 
	}   
  }
}
}

window.onload = function() {
  showhide();
}