ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 1000
ypSlideOutMenu.minCPUResolution = 20
// 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
                this.gRef = "ypSlideOutMenu_"+id
                eval(this.gRef+"=this")
                ypSlideOutMenu.Registry[id] = this
                var d = document
                var strCSS = "";
                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 += '}'
                this.css = strCSS;
                this.load()
                }
}

ypSlideOutMenu.writeCSS = function()
{
        document.writeln('<style type="text/css">');
        for (var id in ypSlideOutMenu.Registry)
                { document.writeln(ypSlideOutMenu.Registry[id].css); }
        document.writeln('</style>');
}

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
                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.hideAll = function()
{
        var reg = ypSlideOutMenu.Registry

        for (menu in reg)
                {
                ypSlideOutMenu.hide(menu);
                if (menu.hideTimer)
                        window.clearTimeout(menu.hideTimer);
                }
}

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 ? "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])
}

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