function NiftyCheck(){
  if(!document.getElementById || !document.createElement)
      return(false);
  var b=navigator.userAgent.toLowerCase();
  if(b.indexOf("msie 5")>0 && b.indexOf("opera")==-1)
      return(false);
  return(true);
}

function Rounded(selector,bk,color,size){
  var i;
  var v=getElementsBySelector(selector);
  var l=v.length;
  for(i=0;i<l;i++){
      AddTop(v[i],bk,color,size);
      AddBottom(v[i],bk,color,size);
      }
}

function RoundedTop(selector,bk,color,size){
  var i;
  var v=getElementsBySelector(selector);
  for(i=0;i<v.length;i++)
      AddTop(v[i],bk,color,size);
}

function RoundedBottom(selector,bk,color,size){
  var i;
  var v=getElementsBySelector(selector);
  for(i=0;i<v.length;i++)
      AddBottom(v[i],bk,color,size);
}

function AddTop(el,bk,color,size){
  var i;
  var d=document.createElement("b");
  var cn="r";
  var lim=4;
  if(size && size=="small"){ cn="rs"; lim=2}
  d.className="rtop";
  d.style.backgroundColor=bk;
  for(i=1;i<=lim;i++){
      var x=document.createElement("b");
      x.className=cn + i;
      x.style.backgroundColor=color;
      d.appendChild(x);
      }
  el.insertBefore(d,el.firstChild);
}

function AddBottom(el,bk,color,size){
  var i;
  var d=document.createElement("b");
  var cn="r";
  var lim=4;
  if(size && size=="small"){ cn="rs"; lim=2}
  d.className="rbottom";
  d.style.backgroundColor=bk;
  for(i=lim;i>0;i--){
      var x=document.createElement("b");
      x.className=cn + i;
      x.style.backgroundColor=color;
      d.appendChild(x);
      }
  el.appendChild(d,el.firstChild);
}

function getElementsBySelector(selector){
  var i;
  var s=[];
  var selid="";
  var selclass="";
  var tag=selector;
  var objlist=[];
  if(selector.indexOf(" ")>0){  //descendant selector like "tag#id tag"
      s=selector.split(" ");
      var fs=s[0].split("#");
      if(fs.length==1) return(objlist);
      return(document.getElementById(fs[1]).getElementsByTagName(s[1]));
      }
  if(selector.indexOf("#")>0){ //id selector like "tag#id"
      s=selector.split("#");
      tag=s[0];
      selid=s[1];
      }
  if(selid!=""){
      objlist.push(document.getElementById(selid));
      return(objlist);
      }
  if(selector.indexOf(".")>0){  //class selector like "tag.class"
      s=selector.split(".");
      tag=s[0];
      selclass=s[1];
      }
  var v=document.getElementsByTagName(tag);  // tag selector like "tag"
  if(selclass=="")
      return(v);
  for(i=0;i<v.length;i++){
      if(v[i].className==selclass){
          objlist.push(v[i]);
          }
      }
  return(objlist);
}