//	written by Pachollini (Matej Novak) http://seky.nahory.net/
//	original najdete na http://seky.nahory.net/2005/04/kulate-rohy-nifty-corners/
//	see http://seky.nahory.net/2005/04/rounded-corners/ for description
//	inspired by Alessandro Fulciniti's http://pro.html.it/esempio/nifty/
//	version 1.2: Safari bug fixed
//	version 1.1: limited support for rounded borders added
//	this script is free to use, modify, sell and whatever you might want to do with it
//	keeping notice about the author or linking my website is highly appreciated
//	enjoy :-)
//added by BW - using it for the Ajax - this func will start searching for the classes from a given element
//so it will round ONLY the element(and all it's children) that has been changed via the Ajax call
function makeElementCorners($elem)
{
if($elem == null) //added for safty 
return;
var $i;
var $elements=find_class($elem,"rounded");
if($elements == null)
return;
if(!(navigator.appName=="Microsoft Internet Explorer" && navigator.appVersion.indexOf("5.5")>-1)) 
for($i in $elements) rounded_corners($elements[$i]);
}
function make_corners()
{
var $i;
var $elements=find_class(document.body,"rounded");
if($elements == null)
return;
if(!(navigator.appName=="Microsoft Internet Explorer" && navigator.appVersion.indexOf("5.5")>-1)) for($i in $elements) rounded_corners($elements[$i]);
}
function rounded_corners($element)
{
if($element == null)
return;
var $rc_radius=13, $rc_left=true, $rc_right=true, $rc_top=true, $rc_bottom=true, $rc_self_color, $rc_parent_color, $rc_antialiased=true,$rc_antialiased_cf=0.33,$rc_compact,$rc_auto_margin,$rc_method="margin",$rc_border,$border_color;
var	$property,$container,$el_container,$el_inner,$j,$i,$ang,$ang_last,$bw,$width,ee,$err_alert;
if($element.className == null)
return;
var $classes=$element.className.split(" ");
$rc_self_color=get_current_style($element,"background-color","(transparent)|(rgba)");
$rc_parent_color=get_current_style($element.parentNode,"background-color","(transparent)|(rgba)");
$border_color=get_current_style($element,"border-top-color");
for ($i in $classes)
{
if(typeof($classes[$i]) == "string") //we also get the functions of the string
{
$property=$classes[$i].split("-");
if($property[0]=="rc") switch ($property[1])
{
case "radius":
$rc_radius=$property[2];
break;
case "top":
$rc_top=$property[2]!="0"?true:false;
break;
case "left":
$rc_left=$property[2]!="0"?true:false;
break;
case "right":
$rc_right=$property[2]!="0"?true:false;
break;
case "bottom":
$rc_bottom=$property[2]!="0"?true:false;
break;
case "selfcolor":
$rc_self_color="#"+$property[2];
break;
case "parentcolor":
$rc_parent_color=$property[2]=="transparent"?"transparent":"#"+$property[2];
break;
case "inheritstylecolors":
$rc_parent_color=$property[2]!="0"?false:true;
$rc_self_color=$property[2]!="0"?false:true;
break;
case "antialiased":
$rc_antialiased=$property[2]!="0"?true:false;
break;
case "antialiasedcf":
$rc_antialiased_cf=parseFloat($property[2]);
break;
case "compact":
$rc_compact=$property[2]!="0"?true:false;
break;
case "automargin":
$rc_auto_margin=$property[2]!="0"?true:false;
break;
case "method":
$rc_method=$property[2];
break;
case "border":
$rc_method="margin";
$rc_border=true;
$element.style.border="none";
break;
}
}
}
if($rc_antialiased && $rc_method=="margin")
{
var $arr_self_color=color2array($rc_self_color);
var $arr_parent_color=$rc_border?color2array($border_color):color2array($rc_parent_color);
if($arr_self_color!=false && $arr_parent_color!=false) var $rc_antialiased_color="rgb("+Math.round(($arr_parent_color[0]-$arr_self_color[0])*$rc_antialiased_cf+$arr_self_color[0])+","+Math.round(($arr_parent_color[1]-$arr_self_color[1])*$rc_antialiased_cf+$arr_self_color[1])+","+Math.round(($arr_parent_color[2]-$arr_self_color[2])*$rc_antialiased_cf+$arr_self_color[2])+")";
else $rc_antialiased=false;
}
var $containers=new Array();
if($rc_top)$containers[0]="top";
if($rc_bottom)$containers[$containers.length]="bottom";
if(!$rc_parent_color)$rc_parent_color=get_current_style(document.body,"background-color");
for($j in $containers)
{
if(typeof($containers[$j]) == "string")
{
$container=$containers[$j];
$el_container=document.createElement("div");
$el_container.className="rc-container-"+$container;
if($rc_parent_color && $rc_method=="margin")
{
try
{
$el_container.style.backgroundColor=$rc_parent_color;
}
catch(ee){self.status="Chyba nastaveni pozadi."}
}
$el_container.style.height=$rc_radius+"px";
for($i=0;$i<$rc_radius;$i++)
{
$el_inner=document.createElement("span");
if($rc_self_color && $rc_method=="margin")$el_inner.style.backgroundColor=$rc_self_color;
$el_inner.style.display="block";
$el_inner.className="rc-inner rc-level-"+$i;
$ang=Math.asin($i/$rc_radius);
$el_inner.style.height="1px";
$el_inner.style.overflow="hidden";
$width=($rc_radius-Math.round($rc_radius*Math.cos($ang)));
if($rc_method=="margin")
{
$el_inner.style.margin="0 "+($rc_right?$width:"0")+"px 0 "+($rc_left?$width:"0")+"px";
if($rc_antialiased || $rc_border)
{
$bw=Math.ceil($rc_radius*Math.cos(Math.asin(($i-1)/$rc_radius))-$rc_radius*Math.cos($ang));
if($bw==0)$bw=1;
$el_inner.style.borderWidth="0 "+($rc_right?$bw:"0")+"px 0 "+($rc_left?$bw:"0")+"px";
if(!$rc_border)
{
try{$el_inner.style.borderColor=$rc_antialiased_color;}
catch($ee){if(!$err_alert)alert("There's probably a wrong CSS declaration of color used (use '#000000' instead of 'black' or '#000'.");$err_alert=true;}
}
else
{
$el_inner.style.borderColor=($rc_antialiased && $width) ? $rc_antialiased_color : $border_color;
if($i==$rc_radius-1)
{
$el_inner.style.backgroundColor=$border_color;
}
}
$el_inner.style.borderStyle="solid";
}
}
else
{
if($rc_parent_color)$el_inner.style.borderColor=$rc_parent_color;
$el_inner.style.borderStyle="solid";
$el_inner.style.borderWidth="0 "+($rc_right?$width:"0")+"px 0 "+($rc_left?$width:"0")+"px";
}
if($container=="top" && $el_container.firstChild)$el_container.insertBefore($el_inner.cloneNode(true),$el_container.firstChild);
else $el_container.appendChild($el_inner.cloneNode(true));
delete $el_inner;
}
if($rc_compact)
{
if($container=="top") $el_container.style.marginBottom="-"+$rc_radius+"px";
else $el_container.style.marginTop="-"+$rc_radius+"px";
}
if($rc_auto_margin)
{
$el_container.style.marginLeft="-"+get_current_style($element,"padding-left");
$el_container.style.marginRight="-"+get_current_style($element,"padding-right");
if($container=="top") $el_container.style.marginTop="-"+get_current_style($element,"padding-top");
else $el_container.style.marginBottom="-"+get_current_style($element,"padding-bottom");
}
if($container=="top" && $element.firstChild)$element.insertBefore($el_container.cloneNode(true),$element.firstChild);
else $element.appendChild($el_container.cloneNode(true));
delete $container;
}
}
}
// common functions:
//this is the function that came with the script - it crashes in some situations - left it for reference
/*
function find_class($element,$classnames,$result,$first)
{
if($element == null) //added for safty - resolved some bugs
return;	  
if(!$first)$first=$element;
if(!$result)$result=new Array();
if ($element.nodeType==1)
{
var $test_exp=new RegExp("(^| )("+$classnames+")( |$)");
if($test_exp.test($element.className)) $result[$result.length]=$element;
}
if ($element.hasChildNodes()) $result=find_class($element.firstChild,$classnames,$result,$first);
if ($element.nextSibling && $element!=$first) $result=find_class($element.nextSibling,$classnames,$result,$first);
return $result;
}
*/
// took this function from http://www.dustindiaz.com/top-ten-javascript/ - gets the classes
function find_class(node, searchClass,tag) 
{
var classElements = new Array();
if ( node == null )
node = document;
if ( tag == null )
tag = '*';
var els = node.getElementsByTagName(tag);
var elsLen = els.length;
var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
var i = 0;//we must declare the variables or there might be a mixup with other variables from other functions
var j = 0;
for (i = 0, j = 0; i < elsLen; i++) {
if ( pattern.test(els[i].className) ) {
classElements[j] = els[i];
j++;
}
}
return classElements;
}
function get_current_style($element,$property,$not_accepted)
{
var ee,$i,$val,$apr;
var $na=new RegExp($not_accepted);
try
{
var $cs=document.defaultView.getComputedStyle($element,'');
$val=$cs.getPropertyValue($property);
}
catch(ee)
{
if($element.currentStyle)
{
$apr=$property.split("-");
for($i=1;$i<$apr.length;$i++) $apr[$i]=$apr[$i].toUpperCase();
$apr=$apr.join("");
$val=$element.currentStyle.getAttribute($apr);
}
}
if($not_accepted && $na.test($val) && $element.parentNode) $val=get_current_style($element.parentNode,$property,$not_accepted);
return $val;
}
function color2array($value)
{
if($value.substr(0,1)=="#")return hex2array($value);
else if($value.indexOf("rgb")>-1) return rgb2array($value);
else return false;
}
function rgb2array($value)
{
var $i;
var $regexp=/([0-9]+)[, ]+([0-9]+)[, ]+([0-9]+)/;
var $array=$regexp.exec($value);
$array.shift();
for($i=0;$i<3;$i++)$array[$i]=parseInt($array[$i]);
return($array);
}
function hex2array($value)
{
return new Array(parseInt($value.substr(1,2),16),parseInt($value.substr(3,2),16),parseInt($value.substr(5,2),16));
}