var sPageUrl =document.URL;
  //if it doenst end in index.html then stick it on the end
  if (sPageUrl.indexOf('/index.html') != -1){
  //document.write("its got one!");
  }
  else if(sPageUrl.indexOf('.html') != -1){
  }
  else if(sPageUrl.indexOf('.htm') != -1){
  }
  else if(sPageUrl.indexOf('index.html') != -1){
  }
  else{
   sPageUrl=sPageUrl +"index.html";
  }
  
 document.write("<a href=\"/php/printerfriendly.php?sPageUrl="+sPageUrl+"\">Printer Friendly Version</a>");