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);
}