
<!-- Original:  Angus Turnbull -->
<!-- Web Site:  http://gusnz.cjb.net -->


var isDOM = (document.getElementById ? true : false); 
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);

// var backgroundImageMj ='url(Grafika/FonasMJ.jpg)';
// var backgroundImageMja='url(Grafika/FonasMJa.jpg)';

// var backgroundImageMP= 'url(Grafika/FonasMP.jpg)';    
// var backgroundImageMPa='url(Grafika/FonasMPa.jpg)';    

var PrelImg = new Array()

  PrelImg[0] = new Image(); PrelImg[0].src='Grafika/FonasM.jpg';
  PrelImg[1] = new Image(); PrelImg[1].src='Grafika/FonasMJa.jpg';


function getRef(id) 
{
  if (isDOM) return document.getElementById(id);
  if (isIE4) return document.all[id];
  if (isNS4) return document.layers[id];
}

function getSty(id) 
{
  return (isNS4 ? getRef(id) : getRef(id).style);
} 

// Hide timeout.

var popTimer = 0;

// Array showing highlighted menu items.

var litNow = new Array();

function popOver(menuNum, itemNum) 
{
  clearTimeout(popTimer);
  hideAllBut(menuNum);
  litNow = getTree(menuNum, itemNum);  
  changeCol(litNow, true);
  targetNum = menu[menuNum][itemNum].target;

  if (targetNum > 0) 
  {
    thisX = parseInt(menu[menuNum][0].ref.left) + parseInt(menu[menuNum][itemNum].ref.left);
    thisY = parseInt(menu[menuNum][0].ref.top) + parseInt(menu[menuNum][itemNum].ref.top);
  
    with (menu[targetNum][0].ref) 
    {
      left = parseInt(thisX + menu[targetNum][0].x);
      top = parseInt(thisY + menu[targetNum][0].y);
      visibility = 'visible';
    }
  }
}

function popOut(menuNum, itemNum) 
{
  if ((menuNum == 0) && !menu[menuNum][itemNum].target)
    hideAllBut(0)
  else
    popTimer = setTimeout('hideAllBut(0)', 500);
}

function getTree(menuNum, itemNum) 
{
  // Array index is the menu number. The contents are null (if that menu is not a parent)
  // or the item number in that menu that is an ancestor (to light it up).

  itemArray = new Array(menu.length);

  while(1) 
  {
    itemArray[menuNum] = itemNum;

  // If we've reached the top of the hierarchy, return.
 
    if (menuNum == 0) return itemArray;

    itemNum = menu[menuNum][0].parentItem;
    menuNum = menu[menuNum][0].parentMenu;
  }
}

// Pass an array and a boolean to specify colour change, true = over colour.

function changeCol(changeArray, isOver) 
{
  for (menuCount = 0; menuCount < changeArray.length; menuCount++) 
  {
    if (changeArray[menuCount]) 
    {
      newCol = isOver ? menu[menuCount][0].overCol : menu[menuCount][0].backCol;

 // Change the colours of the div/layer background.     

      with (menu[menuCount][changeArray[menuCount]].ref) 
      {
        if (isNS4) bgColor = newCol;
          else 
        { 
          backgroundColor = newCol; 
          
          if ( menuCount==0 && isOver )  backgroundPosition='bottom left';
          if ( menuCount==0 && !isOver ) backgroundPosition='top left';    

//          if ( menuCount==0 && isOver ) backgroundImage='url('+PrelImg[1].src+')';
//          if ( menuCount==0 && !isOver ) backgroundImage='url('+PrelImg[0].src+')';    

//          if ( menuCount>=1 && isOver ) backgroundImage=backgroundImageMPa;   //'url(Grafika/FonasMPa.jpg)';
//          if ( menuCount>=1 && !isOver ) backgroundImage=backgroundImageMP;   //'url(Grafika/FonasMP.jpg)';    
        }
      }
    }
  }
}

function hideAllBut(menuNum) 
{
  var keepMenus = getTree(menuNum, 1);
  
  for (count = 0; count < menu.length; count++)
    if (!keepMenus[count])
      menu[count][0].ref.visibility = 'hidden';

  changeCol(litNow, false);
}


// *** MENU CONSTRUCTION FUNCTIONS ***

function Menu(isVert, popInd, x, y, width, overCol, backCol, borderClass, textClass, newLine) 
{
// True or false - a vertical menu?

  this.isVert = isVert;

// The popout indicator used (if any) for this menu.

  this.popInd = popInd

// Position and size settings.

  this.x = x;
  this.y = y;
  this.width = width;

// Colours of menu and items.

  this.overCol = overCol;
  this.backCol = backCol;

// The stylesheet class used for item borders and the text within items.

  this.borderClass = borderClass;
  this.textClass = textClass;

// Parent menu and item numbers, indexed later.

  this.parentMenu = null;
  this.parentItem = null;

// Reference to the object's style properties (set later).

  this.ref = null;
}

function Item(text, href, frame, length, spacing, target,newLine) 
{
  this.text = text;
  this.href = href;
  this.frame = frame;
  this.length = length;
  this.spacing = spacing;
  this.target = target;

  this.newLine = newLine;

// Reference to the object's style properties (set later).

  this.ref = null;
}

function writeMenus() 
{
  if (!isDOM && !isIE4 && !isNS4) return;

  for (currMenu = 0; currMenu < menu.length; currMenu++) with (menu[currMenu][0]) 
  {
    // Variable for holding HTML for items and positions of next item.

    var str = '', itemX = 0, itemY = 0;

    // Remember, items start from 1 in the array (0 is menu object itself, above).
    // Also use properties of each item nested in the other with() for construction.

    for (currItem = 1; currItem < menu[currMenu].length; currItem++) with (menu[currMenu][currItem]) 
    {
      if ( currMenu==0 && newLine==1 ) { itemX = 0; itemY = itemY + width+2; }

      var itemID = 'menu' + currMenu + 'item' + currItem;

      // The width and height of the menu item - dependent on orientation!

      var w = (isVert ? width : length);
      var h = (isVert ? length : width);
      var mh = h;

      if ( isDOM ) mh-=5;

      // Create a div or layer text string with appropriate styles/properties.
      // Thanks to Paul Maden (www.paulmaden.com) for helping debug this in IE4, apparently
      // the width must be a miniumum of 3 for it to work in that browser.

      if (isDOM || isIE4) 
      {
        str += '<div id="' + itemID + '"';
        str += ' style="position: absolute; left: ' + itemX + '; top: ' + itemY + '; width: ' + w + '; height: ' + mh + '; visibility: inherit; ';
        str += ' margin-left: 0pt; ';
        if ( currMenu == 0 ) str += ' padding: 2pt; ';
        if ( currMenu >  0 ) str += ' padding: 2pt; ';
        if (backCol) str += 'background: ' + backCol + '; ';

        if ( currMenu == 0 ) 
        { 
          str += 'background-image:url('+PrelImg[0].src+'); ';   
          str += 'background-position: 0 0px; ';
        } 

//        if ( currMenu >  0 ) str += 'background-image:url(Grafika/FonasMP.jpg)'; 
        str += '" ';
      }

      if (isNS4) 
      {
        str += '<layer id="' + itemID + '" left="' + itemX + '" top="' + itemY + '" width="' +  w + '" height="' + h + '" visibility="inherit" ';
        if (backCol) str += 'bgcolor="' + backCol + '" ';
      }

      if (borderClass) str += 'class="' + borderClass + '" ';

      // Add mouseover handlers and finish div/layer.

      str += 'onMouseOver="popOver(' + currMenu + ',' + currItem + ')" onMouseOut="popOut(' + currMenu + ',' + currItem + ')">';

      // Add contents of item (default: table with link inside).
      // In IE/NS6+, add padding if there's a border to emulate NS4's layer padding.
      // If a target frame is specified, also add that to the <a> tag.

      if ( currMenu == 0 ) str += '<table width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 3 : 0) + '"><tr><td align="center" height="' + (h - 7) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text + '</a></td>';

      if ( currMenu >= 1 ) str += '<table width="' + (w - 8) + '" border="0" cellspacing="0" cellpadding="' + (!isNS4 && borderClass ? 0 : 0) + '"><tr><td align="left" height="' + (h - 5) + '">' + '<a class="' + textClass + '" href="' + href + '"' + (frame ? ' target="' + frame + '">' : '>') + text +  '</a></td>';

      if (target > 0) 
      {
        // Set target's parents to this menu item.

        menu[target][0].parentMenu = currMenu;
        menu[target][0].parentItem = currItem;

        // Add a popout indicator.

        if (popInd) str += '<td class="' + textClass + '" align="right">' + popInd + '</td>';
      }

      str += '</tr></table>' + (isNS4 ? '</layer>' : '</div>');
      
      if (isVert) itemY += length + spacing+2;
        else itemX += length + spacing;
    }

    if (isDOM) 
    {
      var newDiv = document.createElement('div');
      document.getElementsByTagName('body').item(0).appendChild(newDiv);
      newDiv.innerHTML = str;
      ref = newDiv.style;
      ref.position = 'absolute';
      ref.visibility = 'hidden';
    }

//  alert(str);

// Insert a div tag to the end of the BODY with menu HTML in place for IE4.

    if (isIE4) 
    {
      document.body.insertAdjacentHTML('beforeEnd', '<div id="menu' + currMenu + 'div" ' + 'style="position: absolute; visibility: hidden">' + str + '</div>');
      ref = getSty('menu' + currMenu + 'div');
    }

// In NS4, create a reference to a new layer and write the items to it.

    if (isNS4) 
    {
      ref = new Layer(0);
      ref.document.write(str);
      ref.document.close();
    }

    for (currItem = 1; currItem < menu[currMenu].length; currItem++) 
    {
      itemName = 'menu' + currMenu + 'item' + currItem;
      if (isDOM || isIE4) menu[currMenu][currItem].ref = getSty(itemName);
      if (isNS4) menu[currMenu][currItem].ref = ref.document[itemName];
   }
  }

  with(menu[0][0]) 
  {
    ref.left = x;
    ref.top = y;
    ref.visibility = 'visible';
  }
}



// *** OPTIONAL CODE FROM HERE DOWN ***

// These two lines handle the window resize bug in NS4. See <body onResize="...">.
// I recommend you leave this here as otherwise when you resize NS4's width menus are hidden.

var popOldWidth = window.innerWidth;
nsResizeHandler = new Function('if (popOldWidth != window.innerWidth) location.reload()');


// This is a quick snippet that captures all clicks on the document and hides the menus
// every time you click. Use if you want.

if (isNS4) document.captureEvents(Event.CLICK);
document.onclick = clickHandle;

function clickHandle(evt)
{
 if (isNS4) document.routeEvent(evt);
 hideAllBut(0);
}


// This is just the moving command for the example.

function moveRoot()
{
  with(menu[0][0].ref) left = ((parseInt(left) < 100) ? 100 : 5);
}