// Credit for developing Nifty Corners goes to Alessandro Fulciniti
// Visit "http://pro.html.it/esempio/nifty/" for more details
// Our thanks to Alessandro for this nifty feature!
// (Note: some local edits have been made to the original source.)
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="#666";
	    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);
	    var bgColor = color
	    if (v[i].style.backgroundColor && v[i].style.backgroundColor != "") {
	    	bgColor = v[i].style.backgroundColor;
	    }
	    if (t) AddTop(v[i],bk,bgColor,ecolor,prefixt);
	    if (b) AddBottom(v[i],bk,bgColor,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));
}