// Dynamic Layer Object
// sophisticated layer/element targeting and animation object which provides the core functionality needed in most DHTML applications
// 19990604

// Copyright (C) 1999 Dan Steinman
// Distributed under the terms of the GNU Library General Public License
// Available at http://www.dansteinman.com/dynapi/

function DynLayer(id,nestref,frame) {
    if (!is.ns5 && !DynLayer.set && !frame) DynLayerInit()
    this.frame = frame || self
    if (is.ns) {
        if (is.ns4) {
            if (!frame) {
                if (!nestref) var nestref = DynLayer.nestRefArray[id]
                if (!DynLayerTest(id,nestref)) return
                this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id]
            }
            else this.css = (nestref)? eval("frame.document."+nestref+".document."+id) : frame.document.layers[id]
            this.elm = this.event = this.css
            this.doc = this.css.document
        }
        else if (is.ns5) {
            this.elm = document.getElementById(id)
            this.css = this.elm.style
            this.doc = document
        }
        this.x = this.css.left
        this.y = this.css.top
        this.w = this.css.clip.width
        this.h = this.css.clip.height
    }
    else if (is.ie) {
        this.elm = this.event = this.frame.document.all[id]
        this.css = this.frame.document.all[id].style
        this.doc = document
        this.x = this.elm.offsetLeft
        this.y = this.elm.offsetTop
        this.w = (is.ie4)? this.css.pixelWidth : this.elm.offsetWidth
        this.h = (is.ie4)? this.css.pixelHeight : this.elm.offsetHeight
    }
    this.id = id
    this.nestref = nestref
    this.obj = id + "DynLayer"
    eval(this.obj + "=this")
}
function DynLayerMoveTo(x,y) {
    if (x!=null) {
        this.x = x
        if (is.ns) this.css.left = this.x
        else this.css.pixelLeft = this.x
    }
    if (y!=null) {
        this.y = y
        if (is.ns) this.css.top = this.y
        else this.css.pixelTop = this.y
    }
}
function DynLayerMoveBy(x,y) {
    this.moveTo(this.x+x,this.y+y)
}
function DynLayerShow() {
    this.css.visibility = (is.ns4)? "show" : "visible"
}
function DynLayerHide() {
    this.css.visibility = (is.ns4)? "hide" : "hidden"
}
DynLayer.prototype.moveTo = DynLayerMoveTo
DynLayer.prototype.moveBy = DynLayerMoveBy
DynLayer.prototype.show = DynLayerShow
DynLayer.prototype.hide = DynLayerHide
DynLayerTest = new Function('return true')

// DynLayerInit Function
function DynLayerInit(nestref) {
    if (!DynLayer.set) DynLayer.set = true
    if (is.ns) {
        if (nestref) ref = eval('document.'+nestref+'.document')
        else {nestref = ''; ref = document;}
        for (var i=0; i<ref.layers.length; i++) {
            var divname = ref.layers[i].name
            DynLayer.nestRefArray[divname] = nestref
            var index = divname.indexOf("Div")
            if (index > 0) {
                eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")')
            }
            if (ref.layers[i].document.layers.length > 0) {
                DynLayer.refArray[DynLayer.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.document.'+ref.layers[i].name
            }
        }
        if (DynLayer.refArray.i < DynLayer.refArray.length) {
            DynLayerInit(DynLayer.refArray[DynLayer.refArray.i++])
        }
    }
    else if (is.ie) {
        for (var i=0; i<document.all.tags("DIV").length; i++) {
            var divname = document.all.tags("DIV")[i].id
            var index = divname.indexOf("Div")
            if (index > 0) {
                eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
            }
        }
    }
    return true
}
DynLayer.nestRefArray = new Array()
DynLayer.refArray = new Array()
DynLayer.refArray.i = 0
DynLayer.set = false


// Write Method
function DynLayerWrite(html) {
    if (is.ns) {
        this.doc.open()
        this.doc.write(html)
        this.doc.close()
    }
    else if (is.ie) {
        this.event.innerHTML = html
    }
}
DynLayer.prototype.write = DynLayerWrite

// BrowserCheck Object
function BrowserCheck() {
    var b = navigator.appName
    if (b=="Netscape") this.b = "ns"
    else if (b=="Microsoft Internet Explorer") this.b = "ie"
    else this.b = b
    this.version = navigator.appVersion
    this.v = parseInt(this.version)
    this.ns = (this.b=="ns" && this.v>=4)
    this.ns4 = (this.b=="ns" && this.v==4)
    this.ns5 = (this.b=="ns" && this.v==5)
    this.ie = (this.b=="ie" && this.v>=4)
    this.ie4 = (this.version.indexOf('MSIE 4')>0)
    this.ie5 = (this.version.indexOf('MSIE 5')>0)
    this.min = (this.ns||this.ie)
}
is = new BrowserCheck()

// CSS Function
function css(id,left,top,width,height,color,vis,z,other) {
    if (id=="START") return '<STYLE TYPE="text/css">\n'
    else if (id=="END") return '</STYLE>'
    var str = (left!=null && top!=null)? '#'+id+' {position:absolute; left:'+left+'px; top:'+top+'px;' : '#'+id+' {position:relative;'
    if (arguments.length>=4 && width!=null) str += ' width:'+width+'px;'
    if (arguments.length>=5 && height!=null) {
        str += ' height:'+height+'px;'
        if (arguments.length<9 || other.indexOf('clip')==-1) str += ' clip:rect(0px '+width+'px '+height+'px 0px);'
    }
    if (arguments.length>=6 && color!=null) str += (is.ns)? ' layer-background-color:'+color+';' : ' background-color:'+color+';'
    if (arguments.length>=7 && vis!=null) str += ' visibility:'+vis+';'
    if (arguments.length>=8 && z!=null) str += ' z-index:'+z+';'
    if (arguments.length==9 && other!=null) str += ' '+other
    str += '}\n'
    return str
}
function writeCSS(str,showAlert) {
    str = css('START')+str+css('END')
    document.write(str)
    if (showAlert) alert(str)
}
// NewsTicker Object
// an animated news ticker
// 19990623

// Copyright (C) 1999 Dan Steinman
// Distributed under the terms of the GNU Library General Public License
// Available at http://www.dansteinman.com/dynapi/

function NewsTicker(x,y,width,height) {
    this.name = 'NewsTicker'+(NewsTicker.count++)
    this.x = x
    this.y = y
    this.w = width
    this.h = height
    this.obj = this.name + "Object"
    eval(this.obj + "=this")
    this.items = new Array()
    this.scrollCount = 0

    this.pauseLength = 4000
    this.inc = 4
    this.speed = 5
    this.fromX = 0
    this.fromY = this.h
    this.bgColor = null

    this.addItem = NewsTickerAddItem
    this.activate = NewsTickerActivate
    this.build = NewsTickerBuild
    this.start = NewsTickerStart
    this.stop = NewsTickerStop
    this.slide = NewsTickerSlide
}
function NewsTickerAddItem(text) {
    var i = this.items.length
    this.items[i] = new Object()
    this.items[i].text = text
}
function NewsTickerBuild() {
    this.css = css(this.name,this.x,this.y,this.w,this.h)
    this.div = '<div id="'+this.name+'">'
    for (var i=0;i<this.items.length;i++) {
        this.css += css(this.name+'Item'+i,0,0,this.w,this.h,this.bgColor,'hidden')
        this.div += '<div id="'+this.name+'Item'+i+'">'+this.items[i].text+'</div>'
    }
    this.div += '</div>'
}
function NewsTickerActivate(autostart) {
    for (var i=0;i<this.items.length;i++) {
        this.items[i].lyr = new DynLayer(this.name+'Item'+i)
        this.items[i].lyr.moveTo(this.fromX,this.fromY)
        this.items[i].lyr.show()
    }
    this.items[0].lyr.moveTo(0,0)
    this.lyr = new DynLayer(this.name)
    var num = Math.sqrt(Math.pow(this.fromX,2) + Math.pow(this.fromY,2))/this.inc
    this.dx = this.fromX/num || 0
    this.dy = this.fromY/num || 0
    if (autostart!=false) setTimeout(this.obj+'.start()',this.pauseLength)
}
function NewsTickerStart() {
    if (!this.started) {
    this.started = true
    var t = this.scrollCount
    var b = (this.scrollCount==this.items.length-1)? 0 : this.scrollCount+1
    var obj1 = this.items[t].lyr.obj
    var obj2 = this.items[b].lyr.obj
    this.timer = setInterval(this.obj+'.slide('+obj1+','+obj2+')',this.speed)
    }
}
function NewsTickerStop() {
    clearInterval(this.timer)
    this.started = false
}
function NewsTickerSlide(obj1,obj2) {
    obj1.moveBy(-this.dx,-this.dy)
    obj2.moveBy(-this.dx,-this.dy)
    if ((this.dx!=0 && Math.floor(obj2.x)==0) || (this.dy!=0 && Math.floor(obj2.y)==0)) {
        clearInterval(this.timer)
        obj1.moveTo(this.fromX,this.fromY)
        obj2.moveTo(0,0)
        this.scrollCount = (this.scrollCount==this.items.length-1)? 0 : this.scrollCount+1
        this.timer = setTimeout(this.obj+'.started=false;'+this.obj+'.start()',this.pauseLength)
    }
}
NewsTicker.count = 0