/*****************************************************
 * ypSlideOutMenu
 * menus for ns4, ns6, mozilla, opera, ie4, ie5 on mac and win32 
 *****************************************************/
 
ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 400
ypSlideOutMenu.hideDelay = 350
ypSlideOutMenu.minCPUResolution = 10
 
// constructor
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
 
  // global reference to this object
  this.gRef = "ypSlideOutMenu_"+id
  eval(this.gRef+"=this")
 
  // add this menu object to an internal list of all menus
  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 
 
  // set event handlers.
  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 + "')")
 
  //set initial state
  this.endSlide()
 }
}
 
ypSlideOutMenu.showMenu = function(id)
{
 var reg = ypSlideOutMenu.Registry
 var obj = ypSlideOutMenu.Registry[id]
 
 if (obj.container) {
  obj.over = true
 
  // close other menus.
  for (menu in reg) if (id != menu) ypSlideOutMenu.hide(menu)
 
  // 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)
 }
}
 
ypSlideOutMenu.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 = 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)
 
 // 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)
}
 
ypSlideOutMenu.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()", 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"] = this.ns4 ? p : p + "px"
}
ypSlideOutMenu.prototype.getPos = function(c) {
 return parseInt(this.style[c])
}
 
// events
ypSlideOutMenu.prototype.onactivate  = function() { }
ypSlideOutMenu.prototype.ondeactivate = function() { }
  
<!--- Public Side --->
new ypSlideOutMenu("menu1", "down", 4, 33, 79, 110)



 
<!--- name / direction (up or down) / left / top / width / height --->