/************************************************************
* slideMenu -- original script from sharin' aaron at youngpup
* customized for Iomer by Jason (surfanddestroy.com)
* 3/04/2001
************************************************************/

slideMenu.Registry = []
slideMenu.aniLen = 250
slideMenu.hideDelay = 500
slideMenu.minCPUResolution = 10

function slideMenu(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 = "slideMenu_"+id
    eval(this.gRef+"=this")
    slideMenu.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()
  }
}

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

slideMenu.showMenu = function(id) {
  swapImg(id, '/images/' + id + '_over.gif')
  var reg = slideMenu.Registry
  var obj = slideMenu.Registry[id]
  if (obj.container) {
    obj.over = true
    for (menu in reg) if (id != menu) slideMenu.hide(menu)
    if (obj.hideTimer) { 
      reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) 
    }
    if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
  }
}

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

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

slideMenu.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()", slideMenu.minCPUResolution)
}

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

slideMenu.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)
  }
}

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

slideMenu.prototype.moveTo = function(p) { 
  this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}

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

slideMenu.prototype.onactivate = function() { }
slideMenu.prototype.ondeactivate = function() { }