var excerpts = false;
	
function makeExcerpts() {
  var eleArr, sniffer, css, i, newNode, newNodeTxt, parNode;
  
  // are teaser boxes already there?
  if (excerpts)
          return false;
  
  // is DOM capable?
  if (!document.getElementById)
          return false;
          
  // is stylesheet activated?
  sniffer = document.getElementById("css_sniffer");
  if (sniffer.currentStyle) // IE
          css = sniffer.currentStyle['left'];
  else if (window.getComputedStyle) // Mozilla / Opera
    css = document.defaultView.getComputedStyle(sniffer,null).getPropertyValue('left');
  else css = "0px";

  if (css == "auto") // css not activated
    return false;
    eleArr = document.getElementsByTagName("em");
    for (i=0;i<eleArr.length;i++) {
      if (eleArr[i].className == "excerpt") {
        newNode = document.createElement("span");
        newNode.className = "excerptbox";
        newNodeTxt = document.createTextNode( eleArr[i].firstChild.nodeValue );
        newNode.appendChild( newNodeTxt );
        parNode = eleArr[i].parentNode;
        parNode.insertBefore(newNode, parNode.firstChild);
      }
    }
  return excerpts=true;
}

window.onload=makeExcerpts;