ypslideoutmenu.Registry         = []
ypslideoutmenu.aniLen           = 250
ypslideoutmenu.hideDelay        = 250
ypslideoutmenu.minCPUResolution = 10

function ypslideoutmenu(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
    this.gRef        = "ypslideoutmenu_"+id
    eval(this.gRef+"=this")
    ypslideoutmenu.Registry[id] = this
    var d      = document
    var strCSS = '<style type="text/css">';
    strCSS += '#' + this.id + 'Container { visibility:hidden; '
    strCSS += 'left:' + left + 'px; '
    strCSS += 'top:' + top + 'px; '
    strCSS += 'overflow:hidden; z-index:10000; }'
    strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '
    strCSS += 'width:' + width + 'px; '
    strCSS += 'height:' + height + 'px; '
    strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '
    strCSS += '}'
    strCSS += '</style>'
    d.write(strCSS)
    this.load()
  }
}

ypslideoutmenu.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) / ypslideoutmenu.aniLen / ypslideoutmenu.aniLen 
    if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
    this.menu.onmouseover = new Function("ypslideoutmenu.showMenu('" + this.id + "')")
    this.menu.onmouseout  = new Function("ypslideoutmenu.hideMenu('" + this.id + "')")
    this.endSlide()
  }
}

ypslideoutmenu.showMenu = function(id)
{
  //window.status = id
  var reg = ypslideoutmenu.Registry
  var obj = ypslideoutmenu.Registry[id]
  if (obj.container) 
  {
    obj.over = true
    for (menu in reg) if (id != menu) ypslideoutmenu.hide(menu)
    if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
    if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
  }
}

ypslideoutmenu.hideMenu = function(id)
{
  var obj = ypslideoutmenu.Registry[id]
  if (obj.container) 
  {
    if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
    obj.hideTimer = window.setTimeout("ypslideoutmenu.hide('" + id + "')", ypslideoutmenu.hideDelay);
  }
}

ypslideoutmenu.hide = function(id)
{
  var obj = ypslideoutmenu.Registry[id]
  obj.over = false
  if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
  obj.hideTimer = 0
  if (obj.open && !obj.aniTimer) obj.startSlide(false)
}

ypslideoutmenu.prototype.startSlide = function(open) 
{
  this.open = open
  if (open) this.setVisibility(true)
  this.startTime = (new Date()).getTime() 
  this.aniTimer = window.setInterval(this.gRef + ".slide()", ypslideoutmenu.minCPUResolution)
}

ypslideoutmenu.prototype.slide = function() 
{
  var elapsed = (new Date()).getTime() - this.startTime
  if (elapsed > ypslideoutmenu.aniLen) this.endSlide()
  else 
  {
    var d = Math.round(Math.pow(ypslideoutmenu.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)
  }
}

ypslideoutmenu.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)
  }
}

ypslideoutmenu.prototype.setVisibility = function(bShow) 
{ 
  var s = this.ns4 ? this.container : this.container.style
  s.visibility = bShow ? "visible" : "hidden"
}

ypslideoutmenu.prototype.moveTo = function(p) 
{ 
  this.style[this.orientation == "h" ? "left" : "top"] = p
}

ypslideoutmenu.prototype.getPos = function(c) 
{
  return parseInt(this.style[c])
}