/*****************************************************
 * ypSlideOutMenu
 * 3/04/2001
 *
 * a nice little script to create exclusive, slide-out
 * menus for ns4, ns6, mozilla, opera, ie4, ie5 on
 * mac and win32. I've got no linux or unix to test on but
 * it should(?) work...
 *
 * --youngpup--
 *****************************************************/

ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 0
ypSlideOutMenu.hideDelay = 0
ypSlideOutMenu.minCPUResolution = 5

// FIX
var g_PopupIFrame;

function IsIE()
        {
        return ( navigator.appName=="Microsoft Internet Explorer" );
        }

function HidePopupDiv()
        {
        //var divPopup;
        //divPopup=document.getElementById(divID);
        //divPopup.style.visibility = "hidden";

        if (IsIE())
                {
                document.body.removeChild(g_PopupIFrame);
                g_PopupIFrame=null;
                }
        }

function ShowPopupDiv(divID)
        {
        var divPopup=document.getElementById(divID);

        if (!IsIE())
                {
                //Just display the div
                //divPopup.style.visibility ="visible";
                return;
                }

                //Increase default zIndex of div by 1, so that DIV appears before IFrame
        divPopup.style.zIndex=divPopup.style.zIndex+1;

        if(g_PopupIFrame) HidePopupDiv();

        var iFrame = document.createElement("IFRAME");
        iFrame.setAttribute("src", "");
        iFrame.setAttribute("id", "menuContainerIframe");
        iFrame.setAttribute("frameborder", "no");
        iFrame.setAttribute("scrolling", "no");
        iFrame.setAttribute("border", "0");

        //Match IFrame position with divPopup
        iFrame.style.position="absolute";
        iFrame.style.left =divPopup.offsetLeft + 'px';
        iFrame.style.top =divPopup.offsetTop + 'px';
        iFrame.style.width =divPopup.offsetWidth + 'px';
        //iFrame.style.height =divPopup.offsetHeight + 'px';
        iFrame.style.height = '50px';

        document.body.appendChild(iFrame);

        //Store iFrame in global variable, so it can get removed when divPopup is hidden
        g_PopupIFrame=iFrame;
        //divPopup.style.visibility ="visible";
        }

// 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
                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('#' + this.id + 'ContainerIframe {  ')
                d.write('left:' + left + 'px; ')
                d.write('top:' + top + 'px; ')
                d.write(' ')
                d.write('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()
        }
}

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)
{
        window.status = 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); HidePopupDiv();}
}

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])
}