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

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

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

function AddTop(el,bk,color,size)
{
	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(var 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 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(var 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 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 (var i=0;i<v.length;++i)
	{
		if (v[i].className==selclass)
		{
			objlist.push(v[i]);
        }
    }
	return objlist;
}