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);
}