// Don't change these parameters
var delay        = 500; /////
var menuElement  = new Array ();
var usedWidth    = 0;
var numOfMenus   = 0;
/// ----------------------------

// check browser version
isNC    = (document.layers) ? 1 : 0;
isOPERA = (navigator.userAgent.indexOf('Opera') >= 0)? true : false;
isIE    = (document.all && !isOPERA)? true : false;
//isDOM   = (document.getElementById && !isIE && !isOPERA)? true : false;
isDOM   = (document.getElementById)? true : false;

var topID  = -1;

// constructor of menu elements
function menuConstructor (id, content)
{
   this.ID            = id;
   this.parentID      = content [0]*1;
   this.parentItemID  = content [1]*1;
   this.width         = content [2]*1;
   this.timerID       = -1;
   this.isOn          = false;
   this.item          = new Array ();
   this.currItemID    = -1;
   
   this.x = content [3]*1;
   
   if (this.x < 0 && this.parentID == -1)
   {
      this.x = initX + usedWidth;
      usedWidth = usedWidth + this.width;
   }
   else if (this.x < 0 && this.parentID > -1)
   {
      this.x =  menuElement [this.parentID].x
               + menuElement [this.parentID].width
               - xOverlap;
   }
   
   this.y = content [4]*1;
   if (this.y < 0 && this.parentID == -1)
      this.y = initY;
   else if (this.y < 0 && this.parentID > -1)
      this.y =  menuElement [this.parentID].y
               + itemHeight*this.parentItemID
               + yOverlap;
   
   items = content [5];

   layerBody = '<table width=' + this.width + ' cellpadding=3 cellspacing=' + borderSize + ' border=0>';
   
   for (j = 0; j <= items.length - 2; j = j + 2)
   {
      controlBlock = ' onMouseOver = "enterItem (' + this.ID + ', ' + ((j + 2)/2 - 1) + ');" onMouseOut = "exitItem (' + this.ID + ', ' + ((j + 2)/2 - 1) + ');" ';
      layerBody += '<td height=' + itemHeight + ' width=' + this.width + ' bgcolor=' + backColor + '><a class=subMenu href='+ items [j + 1] +' ' + controlBlock + '>' + items [j] + '</a></td>';
      if (j < items.length - 2)
         layerBody = layerBody +  '<tr>\n';
      else
         layerBody = layerBody + '\n';
   }

   if (!isNC)
      layerHeader = '<div id=Menu' + this.ID +
                     ' onMouseOver="enterMenu (' + this.ID + ');" onMouseOut = "exitMenu (' + this.ID + ');"' +
                   ' style="background: ; width: ' + this.width + '; visibility: hidden; position: absolute; left: ' + this.x +
                  '; top: ' + this.y + ';">';
   else
      layerHeader = '<layer id=Menu' + this.ID +
                  ' onMouseOver="enterMenu (' + this.ID + ');" onMouseOut = "exitMenu (' + this.ID + ');"' +
                  ' visibility=hide left=' + this.x +
                  ' top =' + this.y + '>';

   layerHeader += '<table width=' + this.width + ' cellpadding=0 cellspacing=0 border=0>' +
                '<td bgcolor=' + borderColor + '>';

   layerFooter = '</table></td></table>';

   if (!isNC)
      layerFooter = layerFooter + '</div>';
   else
      layerFooter = layerFooter + '</layer>';

   document.writeln (layerHeader + layerBody + layerFooter);

   return this;
}
function enterTopItem (ID)
{
   if (topID != ID && topID != -1)
      hideTree (topID);
   releaseTree (ID);
   topID = ID;
   show (ID);
}
function exitTopItem (ID)
{
   menuElement [ID].timerID = setTimeout ('hide (' + ID + ')', delay);
}
function enterItem (menuID, itemID)
{
   var currItemID = menuElement [menuID].currItemID;

   if (currItemID != i & currItemID > -1) 
      hide (currItemID);
   
   for (var i = 0; i < numOfMenus; i++)
   {
      if (menuElement [i].parentID == menuID &&
          menuElement [i].parentItemID == itemID)
      {
         clearTimeout (menuElement [i].timerID);
         menuElement [i].timerID = -1;
         show (i);
         return 0;
      }
   }

   return -1;
}
function exitItem (menuID, itemID)
{
   for (var i = 0; i < numOfMenus; i++)
   {
      if (menuElement [i].parentID == menuID &&
          menuElement [i].parentItemID == itemID)
      {
         menuElement [i].timerID = setTimeout ('hide (' + i + ')', delay);
         return 0;
      }
   }
}
function enterMenu (ID)
{
   var parentID = menuElement [ID].parentID;
   if (parentID == -1)
   {
      clearTimeout (menuElement [ID].timerID);
      menuElement [ID].timerID = -1;
   }
   else
      releaseTree (ID);
}
function exitMenu (ID)
{
   timeoutTree (ID);
}
function hideTree (ID)
{
   hide (ID);
   for (var j = 0; j < numOfMenus; j++)
   {
      if (menuElement [j].parentID == ID &&
         menuElement [j].isOn)
      {
         hideTree (j);
         return 0;
      }
   }
}
function releaseTree (ID)
{
   clearTimeout (menuElement [ID].timerID);
   menuElement [ID].timerID = -1;

   var parentID = menuElement [ID].parentID;
   if (parentID > -1)
      releaseTree (parentID);
}
function timeoutTree (ID)
{
   menuElement [ID].timerID = setTimeout ('hide (' + ID + ')', delay);
   var parentID = menuElement [ID].parentID;
   if (parentID > -1)
      timeoutTree (parentID);
}

function show (ID)
{
   if (isDOM) 
      document.getElementById('Menu' + ID).style.visibility = "visible";
      else if (isIE || isOPERA) 
      document.all['Menu' + ID].style.visibility = "visible";
         else if (isNC) 
      document.layers[ID].visibility = "show";     

   menuElement [ID].isOn = true;

   if (menuElement [ID].parentID > -1)
      menuElement [menuElement [ID].parentID].currItemID = ID;
        hideselector(ID);

}

function hide (ID)
{
   if (isDOM) 
      document.getElementById('Menu' + ID).style.visibility = "hidden";
      else if (isIE || isOPERA) 
      document.all['Menu' + ID].style.visibility = "hidden";
         else if (isNC) 
      document.layers[ID].visibility = "hide";

   menuElement [ID].isOn = false;
        showselector(ID); 

   if (menuElement [ID].parentID > -1)
      menuElement [menuElement [ID].parentID].currItemID = -1;
}

function createMenuTree ()
{
   for (var i = 0; i < menuContent.length; i++)
   {
      menuElement [i] = new menuConstructor (i, menuContent [i]);
      numOfMenus++;
   }
}


//------------- addons

var hassel = 0;
var stackshow = 0;

function CheckSel() {

// if (isIE) { 
//    var v5=navigator.appVersion;
//    if (v5.indexOf("MSIE 5.0")!=-1) { alert('version 5'); }
// }

 for (var i=0; i<document.forms.length; i++) {

        if (document.forms[i].name=='goform')  {
	 for (var j=0; j<document.forms[i].elements.length; j++) {
	      if (document.forms[i].elements[j].name=='gochoice') { hassel = 1; }
	 }
        }
        if (document.forms[i].name=='searchform')  {
	 for (var j=0; j<document.forms[i].elements.length; j++) {
	      if (document.forms[i].elements[j].name=='m') { hassel = 2; }
	 }
        }
 }

}

function showselector(id) {

  var myshow = 1;
  var str = '';

  if ((document.all || isOPERA ) && hassel) {
     for (j = 0; j < hidesel.length; j++) {
        if (isIE)   if (document.all['Menu' + hidesel[j]].style.visibility == "visible") myshow = 0;
        //if (isDOM)  if (document.all['Menu' + hidesel[j]].style.visibility == "visible") myshow = 0;
             }

     if (myshow>0) { 
                     if (hassel==1)  document.goform.gochoice.style.visibility = 'visible';
                     if (hassel==2)  document.searchform.m.style.visibility = 'visible';
     }
  }

}


function hideselector(id) {

  if ( (document.all || isOPERA)  && hassel) {
     for (j = 0; j < hidesel.length; j++) {
             if (id==hidesel[j]) {
                     if (hassel==1)  document.goform.gochoice.style.visibility = 'hidden';
                     if (hassel==2)  document.searchform.m.style.visibility = 'hidden';
             }
     }
  }
}

function findPosX(obj)
{
   var curleft = 0;
   if (document.getElementById || document.all)
   {
      while (obj.offsetParent)
      {
         curleft += obj.offsetLeft
         obj = obj.offsetParent;
      }
   }
   else if (document.layers)
      curleft += obj.x;
   return curleft;
}

function findPosY(obj)
{
   var curtop = 0;
   var printstring = '';
   if (document.getElementById || document.all)
   {
      while (obj.offsetParent)
      {
         printstring += ' element ' + obj.tagName + ' has ' + obj.offsetTop;
         curtop += obj.offsetTop
         obj = obj.offsetParent;
      }
   }
   else if (document.layers)
      curtop += obj.y;
   window.status = printstring;
   return curtop;
}


function getObj(id)
{

 var name = 'Main'+id;
 if (isDOM)          return document.getElementById(name);
 else if (isIE)      return document.all[name];
 else if (isOPERA)   return document.all[name];
 else                return document.layers[id];
}


function RecalcMenuPosition(){
        usedWidth = 0;
   for (var i = 0; i < menuContent.length; i++)
   {
      menuUpdate (i, menuContent [i]);
   }
}


function menuUpdate(id, content)
{
        var obj;

   this.ID            = id;
   this.parentID      = content [0]*1;
   this.parentItemID  = content [1]*1;
   this.width         = content [2]*1;
   this.timerID       = -1;
   this.isOn          = false;
   this.item          = new Array ();
   this.currItemID    = -1;
   
   this.x = content [3]*1;

   if (this.x < 0 && this.parentID == -1)
   {
      this.x = initX + usedWidth;
      usedWidth = usedWidth + this.width;
   }
   else if (this.x < 0 && this.parentID > -1)
   {
      this.x =  menuElement [this.parentID].x
               + menuElement [this.parentID].width
               - xOverlap;
   }

   if (this.parentID == -1) {

         obj = new getObj(this.ID);

         if (isNC) {
                 // determine pos based on anchor location
                 newX = getAnchorXPosition('Main'+this.ID);
                 //alert(newX);
      }  else newX = findPosX(obj);
      this.x = newX;
           menuElement [this.ID].x =  this.x;

   }

   if (isDOM)  document.getElementById('Menu'+this.ID).style.left = this.x;   
   else if (isIE || isOPERA)   document.all['Menu' + this.ID].style.left = this.x;
   else if (isNC)  document.layers['Menu' + this.ID].left = this.x;

   return this;

}

function getAnchorXPosition(aname) {
   var x=0;
   for (var i=0; i<document.anchors.length; i++) 
      if (document.anchors[i].name==aname) { 
         x = document.anchors[i].x; 
         break;
       }

return x;
}


// ---------------addons ------------------

createMenuTree ();