var mimages = new Array(), currentPageIndex = null;

for(var e = 0; e < 8; e ++) {
  mimages[e] = new Array(new Image(), new Image());
  mimages[e][0].src = "/image/menu_" + (e + 1) + "_off.gif";
  mimages[e][1].src = "/image/menu_" + (e + 1) + "_on.gif";
}

function toggleNavigationItem(imageId) {
  var i = document.images[imageId];
  var index = (1 * imageId.substring(imageId.length - 1)) - 1;
  if(null == i || (index + 1) == currentPageIndex)
    return;
  i.src = (i.src == mimages[index][0].src) ? mimages[index][1].src : mimages[index][0].src;
  if(arguments.length == 2)
    currentPageIndex = index + 1;
}

function setCurrentPage(currentPage) {
  correntPngImages();
  
  if (currentPage.indexOf("/om_actionaid/") == 0) {
    imageId = "menuitem1";
    currentPageIndex = 1;
  } else if (currentPage.indexOf("/omraden/") == 0) {
    imageId = "menuitem2";
    currentPageIndex = 2;
  } else if (currentPage.indexOf("/engagera_dig/") == 0) {
    imageId = "menuitem3";
    currentPageIndex = 3;
  } else if (currentPage.indexOf("/press/") == 0) {
    imageId = "menuitem4";
    currentPageIndex = 4;
  } else if (currentPage.indexOf("/kontakt/") == 0) {
    imageId = "menuitem5";
    currentPageIndex = 5;
  } else if (currentPage.indexOf("/search.xml") == 0) {
    imageId = "menuitem6";
    currentPageIndex = 6;
  } else if (currentPage.indexOf("/fadderavdelning/") == 0) {
    imageId = "menuitem7";
    currentPageIndex = 7;
  } else if (currentPage.indexOf("/foretag/") == 0) {
    imageId = "menuitem8";
    currentPageIndex = 8;
  } else 
    return;
  
  var i = document.images[imageId];
  var index = (1 * imageId.substring(imageId.length - 1)) - 1;
  if(null == i)
    return;
  i.src = mimages[index][1].src;
}

function correntPngImages() {
  if(navigator.appVersion.toLowerCase().indexOf("msie") == -1)
    return;

  //for(var i = 0; i < imgs.length; i ++) {
  //var img = document.images[i]
  
  var img = document.getElementById("act-image");
  var imgName = img.src.toUpperCase();
  if(imgName.substring(imgName.length - 3, imgName.length) == "PNG") {
    var imgID = (img.id) ? "id='" + img.id + "' " : "";
    var imgClass = (img.className) ? "class='" + img.className + "' " : "";
    var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' ";
    var imgStyle = "display:inline-block;" + img.style.cssText;
    if (img.align == "left") imgStyle = "float:left;" + imgStyle;
    if (img.align == "right") imgStyle = "float:right;" + imgStyle;
    if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle;
    var strNewHTML = "<span " + imgID + imgClass + imgTitle + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" + "(src=\'" + img.src + "\', sizingMethod='fixed');\"></span>";
    img.outerHTML = strNewHTML;
 }
  //}
}