// JavaScript Document

function MM_findObj(n, d) { //v4.01
  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);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
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_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_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 roll(img_name1, img_src1)
   {
   document[img_name1].src = img_src1;
   }
   
   // bw-menu.js
// simple dynamic menu
//
// by Bill Weinman  http://bw.org/
// Copyright (c) 2009 BHG LLC
//
// Version 1.0.2
// Created for Dynamic Menus course at lynda.com
//

// configuration variables
var timeout   = 0; // milliseconds
var fadeSpeed = 500;  // milliseconds
var useFade   = true;

// timers array
var timers = new Array();

// state array -- by id, value = active, false = inactive
var state = new Array();

// lastOpacity: used to prevent multiple timers from making the fade flicker
var lastOpacity = new Array();

// MSIE has its own way of setting opacity, so we have to detect it
// all the other major browsers support the standard DOM opacity property
var msie = false;
if( navigator.appName == "Microsoft Internet Explorer" ) msie = true;

// entry point: set element to visible and clear its timers
function setMenu( id )
{
    var e = document.getElementById(id);
    e.style.visibility = "visible";
    state[id] = true;
    setOpacity( id, 1 );
    if(timers[id]) {
        clearTimeout(timers[id]);
        timers[id] = undefined;
     }
}

// set element to hidden and reset its opacity
// typically called by a timer
// may be used as an entry point to bypass timers and fades
function hideMenu( id )
{
    var e = document.getElementById(id);
    state[id] = false;
    e.style.visibility = "hidden";
    if(useFade) setOpacity( id, 1 );
}

// entry point: hide the menu using fade (if enabled)
function clearMenu( id )
{
    if(useFade) timers[id] = setTimeout( 'fadeMenu( "' + id + '" )', timeout );
    else timers[id] = setTimeout( 'hideMenu( "' + id + '" )', timeout );
}

// set the opacity
// special support for MSIE
function setOpacity( id, value )
{
    var e = document.getElementById(id);

    if(state[id]) value = 1;    // menu fade was interrupted
    else if(lastOpacity[id] && (lastOpacity[id] < value)) value = lastOpacity[id];  // prevents flicker if multiple timers set
    
    if(msie) e.style.filter = 'alpha(opacity=' + value * 100 + ')'; // MS Internet Explorer
    else e.style.opacity = (value);     // Everyone else (standard DOM)

    if( value == 0 ) hideMenu( id );    // when all faded, reset the menu state
    lastOpacity[id] = value;
}

// fade a menu
// typically called by a timer
function fadeMenu ( id )
{
    var start = 0;
    var end = 0;
    var s = Math.round( fadeSpeed / 25 );   // fade in 25ms increments
    var timer = 0;
    var i;

    state[id] = false;

    for( i = s; i >= 0 ; i-- ) {
        setTimeout( "setOpacity('" + id + "'," + ( i / s ) + ")", timer++ * fadeSpeed / s )
    }
}