function NiftyCheck(){
	if(!document.getElementById || !document.createElement)
	return(false);
	isXHTML=/html\:/.test(document.getElementsByTagName('body')[0].nodeName);
	if(Array.prototype.push==null){Array.prototype.push=function(){
		this[this.length]=arguments[0]; return(this.length);}}
		return(true);
	}

	function Rounded(selector,wich,bk,color,opt){
		var i,prefixt,prefixb,cn="r",ecolor="",edges=false,eclass="",b=false,t=false;

		if(color=="transparent"){
			cn=cn+"x";
			ecolor=bk;
			bk="transparent";
		}
		else if(opt && opt.indexOf("border")>=0){
			var optar=opt.split(" ");
			for(i=0;i<optar.length;i++)
			if(optar[i].indexOf("#")>=0) ecolor=optar[i];
			if(ecolor=="") ecolor="#999";
			cn+="e";
			edges=true;
		}
		else if(opt && opt.indexOf("smooth")>=0){
			cn+="a";
			ecolor=Mix(bk,color);
		}
		if(opt && opt.indexOf("small")>=0) cn+="s";
		prefixt=cn;
		prefixb=cn;
		if(wich.indexOf("all")>=0){t=true;b=true}
		else if(wich.indexOf("top")>=0) t="true";
		else if(wich.indexOf("tl")>=0){
			t="true";
			if(wich.indexOf("tr")<0) prefixt+="l";
		}
		else if(wich.indexOf("tr")>=0){
			t="true";
			prefixt+="r";
		}
		if(wich.indexOf("bottom")>=0) b=true;
		else if(wich.indexOf("bl")>=0){
			b="true";
			if(wich.indexOf("br")<0) prefixb+="l";
		}
		else if(wich.indexOf("br")>=0){
			b="true";
			prefixb+="r";
		}
		var v=getElementsBySelector(selector);
		var l=v.length;
		for(i=0;i<l;i++){
			if(edges) AddBorder(v[i],ecolor);
			if(t) AddTop(v[i],bk,color,ecolor,prefixt);
			if(b) AddBottom(v[i],bk,color,ecolor,prefixb);
		}
	}

	function AddBorder(el,bc){
		var i;
		if(!el.passed){
			if(el.childNodes.length==1 && el.childNodes[0].nodeType==3){
				var t=el.firstChild.nodeValue;
				el.removeChild(el.lastChild);
				var d=CreateEl("span");
				d.style.display="block";
				d.appendChild(document.createTextNode(t));
				el.appendChild(d);
			}
			for(i=0;i<el.childNodes.length;i++){
				if(el.childNodes[i].nodeType==1){
					el.childNodes[i].style.borderLeft="1px solid "+bc;
					el.childNodes[i].style.borderRight="1px solid "+bc;
				}
			}
		}
		el.passed=true;
	}

	function AddTop(el,bk,color,bc,cn){
		var i,lim=4,d=CreateEl("b");

		if(cn.indexOf("s")>=0) lim=2;
		if(bc) d.className="artop";
		else d.className="rtop";
		d.style.backgroundColor=bk;
		for(i=1;i<=lim;i++){
			var x=CreateEl("b");
			x.className=cn + i;
			x.style.backgroundColor=color;
			if(bc) x.style.borderColor=bc;
			d.appendChild(x);
		}
		el.style.paddingTop=0;
		el.insertBefore(d,el.firstChild);
	}

	function AddBottom(el,bk,color,bc,cn){
		var i,lim=4,d=CreateEl("b");

		if(cn.indexOf("s")>=0) lim=2;
		if(bc) d.className="artop";
		else d.className="rtop";
		d.style.backgroundColor=bk;
		for(i=lim;i>0;i--){
			var x=CreateEl("b");
			x.className=cn + i;
			x.style.backgroundColor=color;
			if(bc) x.style.borderColor=bc;
			d.appendChild(x);
		}
		el.style.paddingBottom=0;
		el.appendChild(d);
	}

	function CreateEl(x){
		if(isXHTML) return(document.createElementNS('http://www.w3.org/1999/xhtml',x));
		else return(document.createElement(x));
	}

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

function Mix(c1,c2){
	var i,step1,step2,x,y,r=new Array(3);
	if(c1.length==4)step1=1;
	else step1=2;
	if(c2.length==4) step2=1;
	else step2=2;
	for(i=0;i<3;i++){
		x=parseInt(c1.substr(1+step1*i,step1),16);
		if(step1==1) x=16*x+x;
		y=parseInt(c2.substr(1+step2*i,step2),16);
		if(step2==1) y=16*y+y;
		r[i]=Math.floor((x*50+y*50)/100);
	}
	return("#"+r[0].toString(16)+r[1].toString(16)+r[2].toString(16));
}