// 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/dynduo/

// modfish: wipe & common added

function DynLayer(id,nestref,frame) {
	if (!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
			this.x = this.css.left
			this.y = this.css.top
			this.w = this.css.clip.width
			this.h = this.css.clip.height
		}
		if (is.ns6) {
			this.elm = this.event = document.getElementById(id);
			this.css = this.elm.style;
			this.doc = document;
			this.x = this.elm.offsetLeft;
			this.y = this.elm.offsetTop;
			this.w = this.elm.offsetWidth;
			this.h = this.elm.offsetHeight;
		}
	}
	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 (is.ns4){
				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 {
				for (var i=0; i<document.getElementsByTagName("DIV").length; i++){
					var divname = document.getElementsByTagName("DIV")[i].id
					var index = divname.indexOf("Div")				
					if (index > 0) {
						eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
					}
				}
		}
	}
	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

// Slide Methods
function DynLayerSlideTo(endx,endy,inc,speed,fn) {
	if (endx==null) endx = this.x
	if (endy==null) endy = this.y
	var distx = endx-this.x
	var disty = endy-this.y
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
	var endx = this.x + distx
	var endy = this.y + disty
	this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
	if (this.slideActive) return
	if (!inc) inc = 10
	if (!speed) speed = 20
	var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc
	if (num==0) return
	var dx = distx/num
	var dy = disty/num
	if (!fn) fn = null
	this.slideActive = true
	this.slide(dx,dy,endx,endy,num,1,speed,fn)
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
	if (!this.slideActive) return
	if (i++ < num) {
		this.moveBy(dx,dy)
		this.onSlide()
		if (this.slideActive) setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed)
		else this.onSlideEnd()
	}
	else {
		this.slideActive = false
		this.moveTo(endx,endy)
		this.onSlide()
		this.onSlideEnd()
		eval(fn)
	}
}
DynLayerSlideInit = new Function()
DynLayer.prototype.slideInit = new Function()
DynLayer.prototype.slideTo = DynLayerSlideTo
DynLayer.prototype.slideBy = DynLayerSlideBy
DynLayer.prototype.slideStart = DynLayerSlideStart
DynLayer.prototype.slide = DynLayerSlide
DynLayer.prototype.onSlide = new Function()
DynLayer.prototype.onSlideEnd = new Function()

// Clip Methods
function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
	if (is.ie) {
		if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft)
		else if (is.ie4) this.clipTo(0,this.css.pixelWidth,this.css.pixelHeight,0)
	}
}
function DynLayerClipTo(t,r,b,l) {
	if (t==null) t = this.clipValues('t')
	if (r==null) r = this.clipValues('r')
	if (b==null) b = this.clipValues('b')
	if (l==null) l = this.clipValues('l')
	if (is.ns) {
		if(is.ns4){ 
			this.css.clip.top = t
			this.css.clip.right = r
			this.css.clip.bottom = b
			this.css.clip.left = l
		}
		else{
			if (is.ns6) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
		}
	}
	else if (is.ie) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
}
function DynLayerClipBy(t,r,b,l) {
	this.clipTo(this.clipValues('t')+t,this.clipValues('r')+r,this.clipValues('b')+b,this.clipValues('l')+l)
}
function DynLayerClipValues(which) {
	if (is.ie) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px");
	if (is.ns4){
		if (which=="t") return (is.ns)? this.css.clip.top : Number(clipv[0])
		if (which=="r") return (is.ns)? this.css.clip.right : Number(clipv[1])
		if (which=="b") return (is.ns)? this.css.clip.bottom : Number(clipv[2])
		if (which=="l") return (is.ns)? this.css.clip.left : Number(clipv[3])
	}
	else 	if (is.ns6) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px")
}
DynLayer.prototype.clipInit = DynLayerClipInit
DynLayer.prototype.clipTo = DynLayerClipTo
DynLayer.prototype.clipBy = DynLayerClipBy
DynLayer.prototype.clipValues = DynLayerClipValues

// Write Method
function DynLayerWrite(html) {
	if (is.ns) {
		if (is.ns4){	
			this.doc.open()
			this.doc.write(html)
			this.doc.close()
		}
		else if(is.ns6) this.event.innerHTML = html
	}
	else if (is.ie) {
		this.event.innerHTML = html
	}
}
DynLayer.prototype.write = DynLayerWrite

// BrowserCheck Object
function BrowserCheck() {
	var b = navigator.appName
	if (b=="Netscape" || b=="Sylaba") this.b = "ns"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else if (b=="Opera") 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.ns6 = (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.ie6 = (this.version.indexOf('MSIE 6')>0)
	this.ie7 = (this.version.indexOf('7')==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)
}


// ----------------------------- common
function DynLayerGetRelativeX() {
	return (is.ns4)? this.css.pageX : this.elm.offsetLeft
}
function DynLayerGetRelativeY() {
	return (is.ns4)? this.css.pageY : this.elm.offsetTop
}
DynLayer.prototype.getRelativeX = DynLayerGetRelativeX
DynLayer.prototype.getRelativeY = DynLayerGetRelativeY

function DynLayerGetContentWidth() {
	return (is.ns4)? this.doc.width : this.elm.offsetWidth
}
function DynLayerGetContentHeight() {
	return (is.ns4)? this.doc.height : this.elm.offsetHeight
}
DynLayer.prototype.getContentWidth = DynLayerGetContentWidth
DynLayer.prototype.getContentHeight = DynLayerGetContentHeight

// ----------------------------- wipe
function DynLayerWipeInit(clipTop,clipRight,clipBottom,clipLeft) {
	if (arguments.length==4) this.clipInit(clipTop,clipRight,clipBottom,clipLeft)
	else this.clipInit()
	this.wipeTo = DynLayerWipeTo
	this.wipeBy = DynLayerWipeBy
	this.wipeStart = DynLayerWipeStart
	this.wipe = DynLayerWipe
}
function DynLayerWipeTo(endt,endr,endb,endl,num,speed,fn) {
	var distt = (endt!=null)? endt-this.clipValues('t'):0
	var distr = (endr!=null)? endr-this.clipValues('r'):0
	var distb = (endb!=null)? endb-this.clipValues('b'):0
	var distl = (endl!=null)? endl-this.clipValues('l'):0
	this.wipeStart(distt,distr,distb,distl,endt,endr,endb,endl,num,speed,fn)
}
function DynLayerWipeBy(distt,distr,distb,distl,num,speed,fn) {
	this.wipeStart(distt,distr,distb,distl,distt+this.clipValues('t'),distr+this.clipValues('r'),distb+this.clipValues('b'),distl+this.clipValues('l'),num,speed,fn)
}
function DynLayerWipeStart(distt,distr,distb,distl,endt,endr,endb,endl,num,speed,fn) {
	if (this.wipeActive) return
	if (!fn) fn = null
	this.wipeActive = true
	this.wipe(distt/num,distr/num,distb/num,distl/num,endt,endr,endb,endl,this.clipValues('t'),this.clipValues('r'),this.clipValues('b'),this.clipValues('l'),num,1,speed,fn)
}
function DynLayerWipe(dt,dr,db,dl,endt,endr,endb,endl,st,sr,sb,sl,num,i,speed,fn) {
	if (!this.wipeActive) return
	if (i++ < num) {
		this.clipTo(st+i*dt,sr+i*dr,sb+i*db,sl+i*dl)
		setTimeout(this.obj+".wipe("+dt+","+dr+","+db+","+dl+","+endt+","+endr+","+endb+","+endl+","+st+","+sr+","+sb+","+sl+","+num+","+i+","+speed+",\""+fn+"\")",speed)
	}
	else {
		this.wipeActive = false
		this.clipTo(endt,endr,endb,endl)
		eval(fn)	
	}
}