// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
//
// ************************
// layer utility routines *
// ************************

function getStyleObject(objectId) {
    // cross-browser function to get an object's style object given its id
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
} // getStyleObject

function changeObjectVisibility(objectId, newVisibility) {
    // get a reference to the cross-browser style object and make sure the object exists
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	// we couldn't find the object, so we can't change its visibility
	return false;
    }
} // changeObjectVisibility


function ShowMenu(who)
{
    var menuId = 'SubTo' + who;
    if(changeObjectVisibility(menuId, 'visible')) {
	return true;
    } else {
	return false;
    }
}

function HideMenu(who)
{
 var id="SubTo"+who;
 changeObjectVisibility(id, 'hidden');
}

var tmsubmenus;

function hideAllMenus() {
    for(counter = 0; counter < ids.length; counter++) {
	changeObjectVisibility('SubTo' + ids[counter], 'hidden');
	var menuTitle = getStyleObject('menuTitle' + counter);
    }
}

function showSelMenus (which) {
    which.sort ();

    var iwh = 0;


    for(counter = 0; counter < ids.length; counter++) {
      if (ids[counter] == which[iwh]) {
       ShowMenu(ids[counter]);
       iwh++;
      } else 
       HideMenu(ids[counter]); 
    } // for
}

var constShow = new Array (); // constantly visible menus

 var divSelects = new Array ();

function  hideDivSelects() {
 divSelects.sort ();
 for(counter = 0; counter < divSelects.length; counter++) {
  changeObjectVisibility('selectDiv' + divSelects[counter], 'hidden');
 }  // for
} // function  hideDevSelects

function  showDivSelects() {
 divSelects.sort ();
 for(counter = 0; counter < divSelects.length; counter++) {
  changeObjectVisibility('selectDiv' + divSelects[counter], 'visible');
 }  // for
} // function  hideDevSelects


var alreadyOver = 0;

function HideAllButMain () {
 clearInterval (tmOver);
 showSelMenus (constShow);
}

function AllOver () {
 if (alreadyOver) 
  clearInterval (tmOver); 
 alreadyOver = 0; 
}


function AdjustMenuPositions () {
 
 if (document.body.clientWidth > 1280)
  newStart = 86 + ((document.body.clientWidth - 1280)/2);
 else 
  newStart = 73  - ((1252 - document.body.clientWidth) / 2);
 if (newStart < 3) newStart = 3;
 

 for(counter = 0; counter < idSunsorted.length; counter++) {
  newPosition =  newStart;
  document.all['SubTo' + idSunsorted[counter]].style.left = newPosition.toString() + 'px';
  // alert ('SubTo' + idSunsorted[counter]);

 } // for 
} // function AdjustMenuPositions