//change the opacity for different browsers
function setOpacity(object, value) {
	object.style.opacity = value/10;
	object.style.filter = 'alpha(opacity=' + value*10 + ')';
}

// zavesa
document.write('<div id="curtain" style="height:100%; width:100%; position:absolute; background-color: #000; opacity: 0.4; filter:alpha(opacity=40); display:none;"></div>');
function Curtain(color) {
	color = typeof(color) != 'undefined' ? color : "#000";

	document.getElementById("curtain").style.display = ''; 
	document.getElementById("curtain").style.backgroundColor = color; 
}
function UnCurtain() { document.getElementById("curtain").style.display = 'none'; }

// funkcija za ajax
function getXmlHttpRequestObject() {
	if (window.XMLHttpRequest) {
		return new XMLHttpRequest();
	} else if(window.ActiveXObject) {
		return new ActiveXObject('Microsoft.XMLHTTP');
	} else {
		alert('Vas brskalnik ne podpira zahtevane tehnologije.');
	}
}

// zamenjava fotografije
function SimpleSwap(el,which){
  el.src=el.getAttribute(which || "origsrc");
}

function SimpleSwapSetup(){
  var x = document.getElementsByTagName("img");
  for (var i=0;i<x.length;i++){
    var oversrc = x[i].getAttribute("longdesc");
    if (!oversrc) continue;

    x[i].oversrc_img = new Image();
    x[i].oversrc_img.src=oversrc;
    x[i].onmouseover = new Function("SimpleSwap(this,'longdesc');");
    x[i].onmouseout = new Function("SimpleSwap(this);");
    x[i].setAttribute("origsrc",x[i].src);
  }
}

var PreSimpleSwapOnload =(window.onload)? window.onload : function(){};
window.onload = function(){PreSimpleSwapOnload(); SimpleSwapSetup();}

// Cookie functions
function SetCookie (name,value,expires,path,domain,secure) 
{
  document.cookie = name + "=" + escape (value) +
    ((expires) ? "; expires=" + expires.toGMTString() : "") +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    ((secure) ? "; secure" : "");
}

function DeleteCookie (name,path,domain) 
{
  if (GetCookie(name)) {
    document.cookie = name + "=" +
      ((path) ? "; path=" + path : "") +
      ((domain) ? "; domain=" + domain : "") +
      "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

function GetCookie (name) 
{
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
	i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break; 
  }
  return null;
}

function getCookieVal (offset)
{
	var str = document.cookie.indexOf(";", offset);
	if(str==-1) str = document.cookie.length;
	return unescape(document.cookie.substring(offset, str));
}