var niftyOk = (document.getElementById && document.createElement && Array.prototype.push);

String.prototype.find=function(what){
  return this.indexOf(what) >= 0 ? true : false;
}

function Nifty(selector,options){
  if(niftyOk==false) return;

  var i,v=selector.split(","),h=0;
  if(options==null) options="";
  if(options.find("fixed-height"))
      h=$$(v[0])[0].offsetHeight;
  for(i=0;i<v.length;i++)
      Rounded(v[i],options);
  if(options.find("height")) SameHeight(selector,h);
}

function Rounded(selector,options){
var i,top="",bottom="",v=new Array();
if(options!=""){
    options=options.replace("left","tl bl");
    options=options.replace("right","tr br");
    options=options.replace("top","tr tl");
    options=options.replace("bottom","br bl");
    options=options.replace("transparent","alias");
    if(options.find("tl")){
        top="both";
        if(!options.find("tr")) top="left";
        }
    else if(options.find("tr")) top="right";
    if(options.find("bl")){
        bottom="both";
        if(!options.find("br")) bottom="left";
        }
    else if(options.find("br")) bottom="right";
    }
if(top=="" && bottom=="" && !options.find("none")){top="both";bottom="both";}
//v=getElementsBySelector(selector);
v=$$(selector);
for(i=0;i<v.length;i++){
    FixIE(v[i]);
    if(top!="") AddTop(v[i],top,options);
    if(bottom!="") AddBottom(v[i],bottom,options);
    }
}

function AddTop(el,side,options){
var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=Mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Top");
if(options.find("small")){
    d.style.marginBottom=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginBottom=(p-10)+"px";
    btype+="b"; lim=8;
    }
else d.style.marginBottom=(p-5)+"px";
for(i=1;i<=lim;i++)
    d.appendChild(CreateStrip(i,side,color,border,btype));
el.style.paddingTop="0";
el.insertBefore(d,el.firstChild);
}

function AddBottom(el,side,options){
var d=CreateEl("b"),lim=4,border="",p,i,btype="r",bk,color;
d.style.marginLeft="-"+getPadding(el,"Left")+"px";
d.style.marginRight="-"+getPadding(el,"Right")+"px";
if(options.find("alias") || (color=getBk(el))=="transparent"){
    color="transparent";bk="transparent"; border=getParentBk(el);btype="t";
    }
else{
    bk=getParentBk(el); border=Mix(color,bk);
    }
d.style.background=bk;
d.className="niftycorners";
p=getPadding(el,"Bottom");
if(options.find("small")){
    d.style.marginTop=(p-2)+"px";
    btype+="s"; lim=2;
    }
else if(options.find("big")){
    d.style.marginTop=(p-10)+"px";
    btype+="b"; lim=8;
    }
else d.style.marginTop=(p-5)+"px";
for(i=lim;i>0;i--)
    d.appendChild(CreateStrip(i,side,color,border,btype));
el.style.paddingBottom=0;
el.appendChild(d);
}

function CreateStrip(index,side,color,border,btype){
var x=CreateEl("b");
x.className=btype+index;
x.style.backgroundColor=color;
x.style.borderColor=border;
if(side=="left"){
    x.style.borderRightWidth="0";
    x.style.marginRight="0";
    }
else if(side=="right"){
    x.style.borderLeftWidth="0";
    x.style.marginLeft="0";
    }
return(x);
}

function CreateEl(x){
return(document.createElement(x));
}

function FixIE(el){
if(el.currentStyle!=null && el.currentStyle.hasLayout!=null && el.currentStyle.hasLayout==false)
    el.style.display="inline-block";
}

function SameHeight(selector,maxh){
var i,v=selector.split(","),t,j,els=[],gap;
for(i=0;i<v.length;i++){
    // t=getElementsBySelector(v[i]);
    t=$$(v[i]);
    els=els.concat(t);
    }
for(i=0;i<els.length;i++){
    if(els[i].offsetHeight>maxh) maxh=els[i].offsetHeight;
    els[i].style.height="auto";
    }
for(i=0;i<els.length;i++){
    gap=maxh-els[i].offsetHeight;
    if(gap>0){
        t=CreateEl("b");t.className="niftyfill";t.style.height=gap+"px";
        nc=els[i].lastChild;
        if(nc.className=="niftycorners")
            els[i].insertBefore(t,nc);
        else els[i].appendChild(t);
        }
    }
}


function getParentBk(x){
var el=x.parentNode,c;
while(el.tagName.toUpperCase()!="HTML" && (c=getBk(el))=="transparent")
    el=el.parentNode;
if(c=="transparent") c="#FFFFFF";
return(c);
}

function getBk(x){
var c=getStyleProp(x,"backgroundColor");
if(c==null || c=="transparent" || c.find("rgba(0, 0, 0, 0)"))
    return("transparent");
if(c.find("rgb")) c=rgb2hex(c);
return(c);
}

function getPadding(x,side){
var p=getStyleProp(x,"padding"+side);
if(p==null || !p.find("px")) return(0);
return(parseInt(p));
}

function getStyleProp(x,prop){
if(x.currentStyle)
    return(x.currentStyle[prop]);
if(document.defaultView.getComputedStyle)
    return(document.defaultView.getComputedStyle(x,'')[prop]);
return(null);
}

function rgb2hex(value){
var hex="",v,h,i;
var regexp=/([0-9]+)[, ]+([0-9]+)[, ]+([0-9]+)/;
var h=regexp.exec(value);
for(i=1;i<4;i++){
    v=parseInt(h[i]).toString(16);
    if(v.length==1) hex+="0"+v;
    else hex+=v;
    }
return("#"+hex);
}

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);
    r[i]=r[i].toString(16);
    if(r[i].length==1) r[i]="0"+r[i];
    }
return("#"+r[0]+r[1]+r[2]);
}