/*
 * utility.js
 *
 * Scripts supporting image handling and navigation
 *
 * 2001-11-12/euh@email.dk:
 * - initial release
 * 2001-09-15/euh@email.dk:
 * - tilføjet diverse funktioner til dynamisk reload
 *   af sider i framesets
 */


/*
 * The following scripts are standard Dreamweaver scripts
 * for image handling.
 * Inserted in this script file to minimize file size.
 */

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_nbGroup(event, grpName) { //v3.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : args[i+1];
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    if ((nbArr = document[grpName]) != null)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = args[i+1];
      nbArr[nbArr.length] = img;
  } }
}


/*
 * The following scripts supports correct appearance of menues
 * when navigating to specific pages. Correct functioning of
 * the scripts depends on page-specific variables initilized
 * on all pages.
 */

function reset_menu() {
    document.location.href = this.location.href;
}

function adjust_menu(imgname, imgsrc) {
    MM_nbGroup('down', 'group1', imgname, rootPath + imgsrc, 1);
}

var rootPath = rootPathForDocument(this.location.pathname);

var parentMenu;
var parentMenuArea = "";
var parentMenuImageSrc = "";

function getMainMenu() {
    if (parent.parent.menu) {
        return parent.parent.menu;
    }
}

function getSubMenu() {
    if (parent.submenu || parent.parent.submenu) {
        return (parent.submenu) ? parent.submenu : parent.parent.submenu;
    }
    return null;
}

function getSpecialMenu() {
    if (parent.specialmenu || parent.parent.specialmenu) {
        return (parent.specialmenu) ? parent.specialmenu : parent.parent.specialmenu;
    }
    return null;
}

function adjustParentMenu() {
    if (null == parentMenu) {
        return;
    }
    if ((parentMenuArea == "") || (parentMenuImageSrc == "")) {
        return;
    }
    parentMenu.adjust_menu(parentMenuArea, parentMenuImageSrc);
}

function rootPathForDocument(path) {
    var rootPath = "";
    var lastSlash = path.lastIndexOf("/");
    if ((lastSlash > 0) && (lastSlash < path.length)) {
        rootPath = path.substring(0, lastSlash + 1);
    }
    return correctRootPathForInternetExplorerOnMac(rootPath);
}

function correctRootPathForInternetExplorerOnMac(rootPath) {
    if (rootPath != "") {
        return rootPath;
    }
    if ((this.location.protocol != "http:") && (this.location.protocol != "HTTP:")) {
        return rootPath;
    }
    if (navigator.appVersion.indexOf("MSIE 5.0; Macintosh;") == -1) {
        return rootPath;
    }
    return "/" + rootPath;
}


/*
 * Various utility functions.
 */

  /*
   * This function returns the value for a given
   * parameter passed to the page in the search
   * part of the url, eg.
   *   http://www.name.org/index.html?page=my_page
   */
  function getSearchParameter(key) {
    var parameterValue = "";
    if (location.search.length < 2) {
      return parameterValue;
    }
    searchArray = location.search.substring(1).split("&");
    for (var i = 0; i < searchArray.length; i++) {
      var parameterPair = searchArray[i].split("=");
      if (parameterPair.length != 2) {
        continue;
      }
      if (parameterPair[0] == key) {
        parameterValue = parameterPair[1];
        break;
      }
    }
    return unescape(parameterValue);
  }

  function reloadIfNotTop() {
    if (top != self) {
      if (frames[0].name != "top") {
        /* Special case handling: Only reload if top-most frame is *not* named 'top' */
        top.location.href = self.location.href;
      }
    }
  }

  function getPageUrlForThisHomepage() {
    var pathArray = location.pathname.split("/");
    if (pathArray.length < 2) {
      return "";
    }
    return pathArray[pathArray.length - 2];
  }

  function reloadIfNotInFrameset() {
    if (top == self) {
      top.location.href = "../../index.html?page=" + getPageUrlForThisHomepage();
    }
  }