bdnhSlideMenu.aniLen = 0
bdnhSlideMenu.hideDelay = 150

bdnhSlideMenu.Registry = []
bdnhSlideMenu.minCPUResolution = 10

// constructor
function bdnhSlideMenu(id, dir, left, top, width, height)
{
this.ie  = document.all ? 1 : 0
this.ns4 = document.layers ? 1 : 0
this.dom = document.getElementById ? 1 : 0

if (this.ie || this.ns4 || this.dom) {
this.id			 = id
this.dir		 = dir
this.orientation = dir == "left" || dir == "right" ? "h" : "v"
this.dirType	 = dir == "right" || dir == "down" ? "-" : "+"
this.dim		 = this.orientation == "h" ? width : height
this.hideTimer	 = false
this.aniTimer	 = false
this.open		 = false
this.over		 = false
this.startTime	 = 0

// global reference to this object
this.gRef = "bdnhSlideMenu_"+id
eval(this.gRef+"=this")

// add this menu object to an internal list of all menus
bdnhSlideMenu.Registry[id] = this

var d = document
d.write('<style type="text/css">')
d.write('#' + this.id + 'Container { visibility:hidden; ')
d.write('left:' + left + 'px; ')
d.write('top:' + top + 'px; ')
d.write('overflow:hidden; }')
d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ')
d.write('width:' + width + 'px; ')
d.write('height:' + height + 'px; ')
d.write('clip:rect(0 ' + width + ' ' + height + ' 0); ')
d.write('}')
d.write('</style>')

this.load()
}
}

bdnhSlideMenu.prototype.load = function() {
var d = document
var lyrId1 = this.id + "Container"
var lyrId2 = this.id + "Content"
var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1]
if (obj1) var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
var temp

if (!obj1 || !obj2) window.setTimeout(this.gRef + ".load()", 100)
else {
this.container	= obj1
this.menu		= obj2
this.style		= this.ns4 ? this.menu : this.menu.style
this.homePos	= eval("0" + this.dirType + this.dim)
this.outPos		= 0
this.accelConst	= (this.outPos - this.homePos) / bdnhSlideMenu.aniLen / bdnhSlideMenu.aniLen

// set event handlers.
if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
//		this.menu.onmouseover = new Function("bdnhSlideMenu.showMenu('" + this.id + "')")
//		this.menu.onmouseout = new Function("bdnhSlideMenu.hideMenu('" + this.id + "')")

//set initial state
this.endSlide()
}
}

bdnhSlideMenu.showMenu = function(id)
{
var reg = bdnhSlideMenu.Registry
var obj = bdnhSlideMenu.Registry[id]

if (obj.container) {
obj.over = true

// if this menu is scheduled to close, cancel it.
if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }

// if this menu is closed, open it.
if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
}
}

bdnhSlideMenu.hideMenu = function(id)
{
// schedules the menu to close after <hideDelay> ms, which
// gives the user time to cancel the action if they accidentally moused out
var obj = bdnhSlideMenu.Registry[id]
if (obj.container) {
if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
obj.hideTimer = window.setTimeout("bdnhSlideMenu.hide('" + id + "')", bdnhSlideMenu.hideDelay);
}
}

bdnhSlideMenu.hide = function(id)
{
var obj = bdnhSlideMenu.Registry[id]
obj.over = false

if (obj.hideTimer) window.clearTimeout(obj.hideTimer)

// flag that this scheduled event has occured.
obj.hideTimer = 0

// if this menu is open, close it.
if (obj.open && !obj.aniTimer) obj.startSlide(false)
}

bdnhSlideMenu.prototype.startSlide = function(open) {
this[open ? "onactivate" : "ondeactivate"]()
this.open = open
if (open) this.setVisibility(true)
this.startTime = (new Date()).getTime()
this.aniTimer = window.setInterval(this.gRef + ".slide()", bdnhSlideMenu.minCPUResolution)
}

bdnhSlideMenu.prototype.slide = function() {
var elapsed = (new Date()).getTime() - this.startTime
if (elapsed > bdnhSlideMenu.aniLen) this.endSlide()
else {
var d = Math.round(Math.pow(bdnhSlideMenu.aniLen-elapsed, 2) * this.accelConst)
if (this.open && this.dirType == "-")		d = -d
else if (this.open && this.dirType == "+")	d = -d
else if (!this.open && this.dirType == "-")	d = -this.dim + d
else										d = this.dim + d

this.moveTo(d)
}
}

bdnhSlideMenu.prototype.endSlide = function() {
this.aniTimer = window.clearTimeout(this.aniTimer)
this.moveTo(this.open ? this.outPos : this.homePos)
if (!this.open) this.setVisibility(false)
if ((this.open && !this.over) || (!this.open && this.over)) {
this.startSlide(this.over)
}
}

bdnhSlideMenu.prototype.setVisibility = function(bShow) {
var s = this.ns4 ? this.container : this.container.style
s.visibility = bShow ? "visible" : "hidden"
}
bdnhSlideMenu.prototype.moveTo = function(p) {
this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : (p) + "px"
}
bdnhSlideMenu.prototype.getPos = function(c) {
return parseInt(this.style[c])
}

// events
bdnhSlideMenu.prototype.onactivate		= function() { }
bdnhSlideMenu.prototype.ondeactivate	= function() { }


function moveOptionUp(obj){if(!hasOptions(obj)){return;}for(i=0;i<obj.options.length;i++){if(obj.options[i].selected){if(i != 0 && !obj.options[i-1].selected){swapOptions(obj,i,i-1);obj.options[i-1].selected = true;}}}}
function moveOptionDown(obj){if(!hasOptions(obj)){return;}for(i=obj.options.length-1;i>=0;i--){if(obj.options[i].selected){if(i !=(obj.options.length-1) && ! obj.options[i+1].selected){swapOptions(obj,i,i+1);obj.options[i+1].selected = true;}}}}