ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 300
ypSlideOutMenu.hideDelay = 0 //500
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
        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; z-index:101; ')
        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()
    }
}

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 && (! obj.parent || obj.parent.id != menu) &&
                (! obj.child || obj.child.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 && (! obj.child || ! obj.child.open)) {
        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])
}