/*
'	$Id: scroller.js 1735 2007-12-11 15:50:22Z bernd $
'	$Date: 2007-12-11 16:50:22 +0100 (Di, 11 Dez 2007) $
'	$HeadURL: svn://server01/01_Fiat_AAG/Lancia/02_DOMAINS/configurator.lancia.de/01_HTML/trunk/include/scroller.js $
'	$Revision: 1735 $
'
'	Name:		
'	Funktion:	
'
'	Aufruf:		
'				
'	Projekt:	Lancia: CC-Relaunch 2007
'	Copyright:	(C) 2004 Arc Worldwide Frankfurt
'
'	Autor:		Arc Interactive, Hamburg
'				
'	Änderungen:	21.10.2007, BOH: 
'
'
'*/
/* 
	dw_scroll_dx.js version date: June 2004
	contains all scrolling layers files in one 
*/

/*************************************************************************
  This code is from Dynamic Web Coding at www.dyn-web.com
  Copyright 2001-4 by Sharon Paine 
  See Terms of Use at www.dyn-web.com/bus/terms.html
  regarding conditions under which you may use this code.
  This notice must be retained in the code as is!
*************************************************************************/

/* dw_scrollObj.js  version date: June 2004  */

/* Michael@050413
 *   "lyrScrollbar"-Parameter in load-Event hinzugefügt.
 *     -> Erlaubt das automatische Ausblenden der Scrollbar, falls das Scrolling ohnehin
 *        aufgrund der geringen Content-Höhe unmöglich wäre.
 *        Falls nicht angegeben, bleibt die Scrollbar immer sichtbar.
 */

// LYNX@0503:
constDefaultSpeed = 100;

dw_scrollObjs = {};
dw_scrollObj.speed = constDefaultSpeed; // default speed for mouseover scrolling
//  constructor arguments: id of layer containing scrolling layers (clipped layer), id of layer to scroll,
//	id of table or other element that scrolling content is nested in.
//	ns6+/moz need that extra container to get width for horizontal scrolling.
//	(not needed for vertical scrolling)
function dw_scrollObj(wnId, lyrId, cntId, lyrScrollbar, lyrScrollbarX) {
	this.id = wnId; dw_scrollObjs[this.id] = this;
	this.animString = "dw_scrollObjs." + this.id;
	this.load(lyrId, cntId, lyrScrollbar, lyrScrollbarX);
}

dw_scrollObj.loadLayer = function(wnId, id, cntId) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].load(id, cntId);
}

dw_scrollObj.prototype.load = function(lyrId, cntId, lyrScrollbar, lyrScrollbarX) {
	if (!document.getElementById) return;
	var wndo, lyr;
	if (this.lyrId) {
		lyr = document.getElementById(this.lyrId);
		lyr.style.visibility = "hidden";
	}
	lyr = document.getElementById(lyrId);
	wndo = document.getElementById(this.id);
	lyr.style.top = this.y = 0; lyr.style.left = this.x = 0;
	this.maxY = (lyr.offsetHeight - wndo.offsetHeight > 0)? lyr.offsetHeight - wndo.offsetHeight: 0;
	this.wd = cntId? document.getElementById(cntId).offsetWidth: lyr.offsetWidth;
	this.maxX = (this.wd - wndo.offsetWidth > 0)? this.wd - wndo.offsetWidth: 0;
	this.lyrId = lyrId; // hold id of currently visible layer
	lyr.style.visibility = "visible";
	this.on_load(); this.ready = true;


	// Michael@050418
	if(typeof(lyrScrollbar)!="undefined") if(lyrScrollbar || lyrScrollbar != "")
	{
		var myScrollbarLayer = document.getElementById(lyrScrollbar);

		//alert(this.id + ":\n\n" + lyr.offsetHeight + " : " + myScrollbarLayer.offsetHeight + "\n\n("+this.maxY+")");
		//if(lyr.offsetHeight <= myScrollbarLayer.offsetHeight)
		//console.log(this.maxY);
		if(this.maxY == 0) {
			myScrollbarLayer.style.visibility = "hidden";
		}
		else {
			myScrollbarLayer.style.visibility = "visible";
		}
	}

	// BOH@20071203
	if(typeof(lyrScrollbarX)!="undefined")if(lyrScrollbarX || lyrScrollbarX != ""){
		var myScrollbarLayerX = document.getElementById(lyrScrollbarX);

		//alert(this.id + ":\n\n" + lyr.offsetHeight + " : " + myScrollbarLayerX.offsetHeight + "\n\n("+this.maxY+")");
		//if(lyr.offsetHeight <= myScrollbarLayerX.offsetHeight)
		if(this.maxX == 0)
		myScrollbarLayerX.style.visibility = "hidden";
		else
		myScrollbarLayerX.style.visibility = "visible";
	}
}

dw_scrollObj.prototype.on_load = function() {}

dw_scrollObj.prototype.shiftTo = function(lyr, x, y) {
	if(lyr && lyr.style)	// LYNX&MS@050418
	{
		lyr.style.left = (this.x = x) + "px";
		lyr.style.top = (this.y = y) + "px";
	}
}

// remove layers from table for ns6+/mozilla (needed for scrolling inside tables)
dw_scrollObj.GeckoTableBugFix = function() {
	var i, wndo, holderId, holder, x, y;
	if ( navigator.userAgent.indexOf("Gecko") > -1 && navigator.userAgent.indexOf("Firefox") == -1 ) {
		dw_scrollObj.hold = []; // holds id's of wndo and its container
		for (i=0; arguments[i]; i++) {
			if ( dw_scrollObjs[ arguments[i] ] ) {
				wndo = document.getElementById( arguments[i] );
				holderId = wndo.parentNode.id;
				holder = document.getElementById(holderId);
				document.body.appendChild( holder.removeChild(wndo) );
				wndo.style.zIndex = 1000;
				x = holder.offsetLeft; y = holder.offsetTop;
				wndo.style.left = x + "px"; wndo.style.top = y + "px";
				dw_scrollObj.hold[i] = [ arguments[i], holderId ];
			}
		}
		window.addEventListener("resize", dw_scrollObj.rePositionGecko, true);
	}
}

// ns6+/mozilla need to reposition layers onresize when scrolling inside tables.
dw_scrollObj.rePositionGecko = function() {
	var i, wndo, holder, x, y;
	if (dw_scrollObj.hold) {
		for (i=0; dw_scrollObj.hold[i]; i++) {
			wndo = document.getElementById( dw_scrollObj.hold[i][0] );
			holder = document.getElementById( dw_scrollObj.hold[i][1] );
			x = holder.offsetLeft; y = holder.offsetTop;
			wndo.style.left = x + "px"; wndo.style.top = y + "px";
		}
	}
}

/* dw_hoverscroll.js  version date: June 2004 */

dw_scrollObj.stopScroll = function(wnId) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].endScroll();
}

// increase speed onmousedown of scroll links
dw_scrollObj.doubleSpeed = function(wnId) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed *= 2;
}

// LYNX@0403: increase speed by factor
dw_scrollObj.factorSpeed = function(wnId,theFactor) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed *= theFactor;
}
// LYNX@0403: set speed to default value
dw_scrollObj.defaultSpeed = function(wnId) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed = constDefaultSpeed;
}

dw_scrollObj.resetSpeed = function(wnId) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].speed /= 2;
}

// algorithms for time-based scrolling and scrolling onmouseover at any angle adapted from youngpup.net
dw_scrollObj.initScroll = function(wnId, deg, sp) {
	if ( dw_scrollObjs[wnId] ) {
		var cosine, sine;
		if (typeof deg == "string") {
			switch (deg) {
				case "up"    : deg = 90;  break;
				case "down"  : deg = 270; break;
				case "left"  : deg = 180; break;
				case "right" : deg = 0;   break;
				default:
				// alert("Direction of scroll in mouseover scroll links should be 'up', 'down', 'left', 'right' or number: 0 to 360.");
			}
		}
		deg = deg % 360;
		if (deg % 90 == 0) {
			cosine = (deg == 0)? -1: (deg == 180)? 1: 0;
			sine = (deg == 90)? 1: (deg == 270)? -1: 0;
		}
		else{
			var angle = deg * Math.PI/180;
			cosine = -Math.cos(angle); sine = Math.sin(angle);
		}
		dw_scrollObjs[wnId].fx = cosine / ( Math.abs(cosine) + Math.abs(sine) );
		dw_scrollObjs[wnId].fy = sine / ( Math.abs(cosine) + Math.abs(sine) );
		dw_scrollObjs[wnId].endX = (deg == 90 || deg == 270)? dw_scrollObjs[wnId].x:
		(deg < 90 || deg > 270)? -dw_scrollObjs[wnId].maxX: 0;
		dw_scrollObjs[wnId].endY = (deg == 0 || deg == 180)? dw_scrollObjs[wnId].y:
		(deg < 180)? 0: -dw_scrollObjs[wnId].maxY;
		dw_scrollObjs[wnId].startScroll(sp);
	}
}

// speed (optional) to override default speed (set in dw_scrollObj.speed)
dw_scrollObj.prototype.startScroll = function(speed) {
	if (!this.ready) return; if (this.timerId) clearInterval(this.timerId);
	this.speed = speed || dw_scrollObj.speed;
	this.lyr = document.getElementById(this.lyrId);
	this.lastTime = ( new Date() ).getTime();
	this.on_scroll_start();
	this.timerId = setInterval(this.animString + ".scroll()", 10);
}

dw_scrollObj.prototype.scroll = function() {
	var now = ( new Date() ).getTime();
	var d = (now - this.lastTime)/1000 * this.speed;
	if (d > 0) {
		var x = this.x + this.fx * d; var y = this.y + this.fy * d;
		if (this.fx == 0 || this.fy == 0) { // for horizontal or vertical scrolling
			if ( ( this.fx == -1 && x > -this.maxX ) || ( this.fx == 1 && x < 0 ) ||
			( this.fy == -1 && y > -this.maxY ) || ( this.fy == 1 && y < 0 ) ) {
				this.lastTime = now;
				this.shiftTo(this.lyr, x, y);
				this.on_scroll(x, y);
			}
			else {
				clearInterval(this.timerId); this.timerId = 0;
				this.shiftTo(this.lyr, this.endX, this.endY);
				this.on_scroll_end(this.endX, this.endY);
			}
		}
		else { // for scrolling at an angle (stop when reach end on one axis)
			if ( ( this.fx < 0 && x >= -this.maxX && this.fy < 0 && y >= -this.maxY ) ||
			( this.fx > 0 && x <= 0 && this.fy > 0 && y <= 0 ) ||
			( this.fx < 0 && x >= -this.maxX && this.fy > 0 && y <= 0 ) ||
			( this.fx > 0 && x <= 0 && this.fy < 0 && y >= -this.maxY ) ) {
				this.lastTime = now;
				this.shiftTo(this.lyr, x, y);
				this.on_scroll(x, y);
			}
			else {
				clearInterval(this.timerId); this.timerId = 0;
				this.on_scroll_end(this.x, this.y);
			}
		}
	}
}

dw_scrollObj.prototype.endScroll = function() {
	if (!this.ready) return;
	if (this.timerId) clearInterval(this.timerId);
	this.timerId = 0;  this.lyr = null;
}

dw_scrollObj.prototype.on_scroll = function() {}
dw_scrollObj.prototype.on_scroll_start = function() {}
dw_scrollObj.prototype.on_scroll_end = function() {}

/* dw_glidescroll.js  version date: June 2004 */

dw_scrollObj.slideDur = 500; // duration of glide

// intermediary functions needed to prevent errors before page loaded
dw_scrollObj.scrollBy = function(wnId, x, y, dur) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].glideBy(x, y, dur);
}

dw_scrollObj.scrollTo = function(wnId, x, y, dur) {
	if ( dw_scrollObjs[wnId] ) dw_scrollObjs[wnId].glideTo(x, y, dur);
}

// Resources for time-based slide algorithm:
//  DHTML chaser tutorial at DHTML Lab - www.webreference.com/dhtml
//  and cbe_slide.js from	www.cross-browser.com by Mike Foster
dw_scrollObj.prototype.glideBy = function(dx, dy, dur) {
	if ( !document.getElementById || this.sliding ) return;
	this.slideDur = dur || dw_scrollObj.slideDur;
	this.destX = this.destY = this.distX = this.distY = 0;
	this.lyr = document.getElementById(this.lyrId);
	this.startX = this.x; this.startY = this.y;
	if (dy < 0) this.distY = (this.startY + dy >= -this.maxY)? dy: -(this.startY  + this.maxY);
	else if (dy > 0) this.distY = (this.startY + dy <= 0)? dy: -this.startY;
	if (dx < 0) this.distX = (this.startX + dx >= -this.maxX)? dx: -(this.startX + this.maxX);
	else if (dx > 0) this.distX = (this.startX + dx <= 0)? dx: -this.startX;
	this.destX = this.startX + this.distX; this.destY = this.startY + this.distY;
	this.slideTo(this.destX, this.destY);
}

dw_scrollObj.prototype.glideTo = function(destX, destY, dur) {
	if ( !document.getElementById || this.sliding) return;
	this.slideDur = dur || dw_scrollObj.slideDur;
	this.lyr = document.getElementById(this.lyrId);
	this.startX = this.x; this.startY = this.y;
	this.destX = -Math.max( Math.min(destX, this.maxX), 0);
	this.destY = -Math.max( Math.min(destY, this.maxY), 0);
	this.distY = this.destY - this.startY;
	this.distX =  this.destX - this.startX;
	this.slideTo(this.destX, this.destY);
}

dw_scrollObj.prototype.slideTo = function(destX, destY) {
	this.per = Math.PI/(2 * this.slideDur); this.sliding = true;
	this.slideStart = (new Date()).getTime();
	this.aniTimer = setInterval(this.animString + ".doSlide()",10);
	this.on_slide_start(this.startX, this.startY);
}

dw_scrollObj.prototype.doSlide = function() {
	var elapsed = (new Date()).getTime() - this.slideStart;
	if (elapsed < this.slideDur) {
		var x = this.startX + this.distX * Math.sin(this.per*elapsed);
		var y = this.startY + this.distY * Math.sin(this.per*elapsed);
		this.shiftTo(this.lyr, x, y); this.on_slide(x, y);
	}
	else {	// if time's up
		clearInterval(this.aniTimer); this.sliding = false;
		this.shiftTo(this.lyr, this.destX, this.destY);
		this.lyr = null; this.on_slide_end(this.destX, this.destY);
	}
}

dw_scrollObj.prototype.on_slide_start = function() {}
dw_scrollObj.prototype.on_slide = function() {}
dw_scrollObj.prototype.on_slide_end = function() {}

/*   dw_slidebar.js   version date: Feb 2004   requires dw_event.js   */

// model: Aaron Boodman's dom drag at www.youngpup.net
var dw_slidebar = {
	obj: null,
	slideDur: 500,  // duration of glide onclick of track
	init: function (bar, track, axis, x, y) {
		x = x || 0; y = y || 0;
		bar.style.left = x + "px"; bar.style.top = y + "px";
		bar.axis = axis; track.bar = bar;
		if (axis == "h") {
			bar.trkWd = track.offsetWidth; // hold for setBarSize
			bar.maxX = bar.trkWd - bar.offsetWidth - x;
			bar.minX = x; bar.maxY = y; bar.minY = y;
		}
		else {
			bar.trkHt = track.offsetHeight;
			bar.maxY = bar.trkHt - bar.offsetHeight - y;
			bar.maxX = x; bar.minX = x; bar.minY = y;
		}
		bar.on_drag_start =  bar.on_drag =   bar.on_drag_end =
		bar.on_slide_start = bar.on_slide =  bar.on_slide_end = function() {}
		bar.onmousedown = this.startDrag; track.onmousedown = this.startSlide;
	},

	startSlide: function(e) { // called onmousedown of track
		if ( dw_slidebar.aniTimer ) clearInterval(dw_slidebar.aniTimer);
		e = e? e: window.event;
		var bar = dw_slidebar.obj = this.bar; // i.e., track's bar
		e.offX = (typeof e.layerX != "undefined")? e.layerX: e.offsetX;
		e.offY = (typeof e.layerY != "undefined")? e.layerY: e.offsetY;
		bar.startX = parseInt(bar.style.left); bar.startY = parseInt(bar.style.top);
		if (bar.axis == "v") {
			bar.destX = bar.startX;
			bar.destY = (e.offY < bar.startY)? e.offY: e.offY - bar.offsetHeight;
			bar.destY = Math.min( Math.max(bar.destY, bar.minY), bar.maxY );
		}
		else {
			bar.destX = (e.offX < bar.startX)? e.offX: e.offX - bar.offsetWidth;
			bar.destX = Math.min( Math.max(bar.destX, bar.minX), bar.maxX );
			bar.destY = bar.startY;
		}
		bar.distX = bar.destX - bar.startX; bar.distY = bar.destY - bar.startY;
		dw_slidebar.per = Math.PI/(2 * dw_slidebar.slideDur);
		dw_slidebar.slideStart = (new Date()).getTime();
		bar.on_slide_start(bar.startX, bar.startY);
		dw_slidebar.aniTimer = setInterval("dw_slidebar.doSlide()",10);
	},

	doSlide: function() {
		if ( !dw_slidebar.obj ) { clearInterval(dw_slidebar.aniTimer); return; }
		var bar = dw_slidebar.obj;
		var elapsed = (new Date()).getTime() - this.slideStart;
		if (elapsed < this.slideDur) {
			var x = bar.startX + bar.distX * Math.sin(this.per*elapsed);
			var y = bar.startY + bar.distY * Math.sin(this.per*elapsed);
			bar.style.left = x + "px"; bar.style.top = y + "px";
			bar.on_slide(x, y);
		}
		else {	// if time's up
			clearInterval(this.aniTimer);
			bar.style.left = bar.destX + "px"; bar.style.top = bar.destY + "px";
			bar.on_slide_end(bar.destX, bar.destY);
			this.obj = null;
		}
	},

	startDrag: function (e) { // called onmousedown of bar
		e = dw_event.DOMit(e);
		if ( dw_slidebar.aniTimer ) clearInterval(dw_slidebar.aniTimer);
		var bar = dw_slidebar.obj = this;
		bar.downX = e.clientX; bar.downY = e.clientY;
		bar.startX = parseInt(bar.style.left);
		bar.startY = parseInt(bar.style.top);
		bar.on_drag_start(bar.startX, bar.startY);
		dw_event.add( document, "mousemove", dw_slidebar.doDrag, true );
		dw_event.add( document, "mouseup",   dw_slidebar.endDrag,  true );
		e.stopPropagation();
	},

	doDrag: function (e) {
		e = e? e: window.event;
		if (!dw_slidebar.obj) return;
		var bar = dw_slidebar.obj;
		var nx = bar.startX + e.clientX - bar.downX;
		var ny = bar.startY + e.clientY - bar.downY;
		nx = Math.min( Math.max( bar.minX, nx ), bar.maxX);
		ny = Math.min( Math.max( bar.minY, ny ), bar.maxY);
		bar.style.left = nx + "px"; bar.style.top  = ny + "px";
		bar.on_drag(nx,ny);
		return false;
	},

	endDrag: function () {
		dw_event.remove( document, "mousemove", dw_slidebar.doDrag, true );
		dw_event.remove( document, "mouseup",   dw_slidebar.endDrag,  true );
		if ( !dw_slidebar.obj ) return; // avoid errors in ie if inappropriate selections
		dw_slidebar.obj.on_drag_end( parseInt(dw_slidebar.obj.style.left), parseInt(dw_slidebar.obj.style.top) );
		dw_slidebar.obj = null;
	}

}

/*  dw_scroll_aux.js    version date: May 2004  */

// Size dragBar according to layer size?
dw_scrollObj.prototype.bSizeDragBar = true;

dw_scrollObj.prototype.setUpScrollbar = function(id, trkId, axis, offx, offy) {
	//alert(id);
	if (!document.getElementById) return;
	var bar = document.getElementById(id);
	var trk = document.getElementById(trkId);
	dw_slidebar.init(bar, trk, axis, offx, offy);
	// connect dw_slidebar with dw_scrollObj
	bar.wn = dw_scrollObjs[this.id]; // scroll area object this bar connected to
	if (axis == "v") this.vBarId = id; else this.hBarId = id;
	// also called on_load (i.e., when layer loaded), but in case h and v scrollbars, need to call here too
	//alert(this.bSizeDragBar);
	//console.log(this.bSizeDragBar);
	if(this.bSizeDragBar > 0) {
		this.setBarSize();
	}
	bar.on_drag_start = bar.on_slide_start = dw_scrollObj.getWndoLyrRef;
	bar.on_drag_end =   bar.on_slide_end =   dw_scrollObj.tossWndoLyrRef;
	bar.on_drag =       bar.on_slide =       dw_scrollObj.UpdateWndoLyrPos;
}

// for these 3 functions (assigned to bar.on_drag/slide...) "this" refers to bar
// get/discard ref to layer visible in scroll area
dw_scrollObj.getWndoLyrRef = function()  { this.wnLyr = document.getElementById(this.wn.lyrId); }
dw_scrollObj.tossWndoLyrRef = function() { this.wnLyr = null; }
// keep position of scrolling layer in synch with slide/drag of bar
dw_scrollObj.UpdateWndoLyrPos = function(x, y) {
	var nx, ny;
	if (this.axis == "v") {
		nx = this.wn.x; // floating point values for loaded layer's position held in shiftTo method
		ny = -(y - this.minY) * ( this.wn.maxY / (this.maxY - this.minY) ) || 0;
	}
	else {
		ny = this.wn.y;
		nx = -(x - this.minX) * ( this.wn.maxX / (this.maxX - this.minX) ) || 0;
	}
	this.wn.shiftTo(this.wnLyr, nx, ny);
}

// Keep position of dragBar in sync with position of layer onscroll
dw_scrollObj.prototype.updateScrollbar = function(x, y) {
	var nx, ny;
	if ( this.vBarId ) {
		if (!this.maxY) return;
		ny = -( y * ( (this.vbar.maxY - this.vbar.minY) / this.maxY ) - this.vbar.minY );
		ny = Math.min( Math.max(ny, this.vbar.minY), this.vbar.maxY);
		nx = parseInt(this.vbar.style.left);
		this.vbar.style.left = nx + "px"; this.vbar.style.top = ny + "px";
	}
	if ( this.hBarId ) {
		if (!this.maxX) return;
		nx = -( x * ( (this.hbar.maxX - this.hbar.minX) / this.maxX ) - this.hbar.minX );
		nx = Math.min( Math.max(nx, this.hbar.minX), this.hbar.maxX);
		ny = parseInt(this.hbar.style.top);
		this.hbar.style.left = nx + "px"; this.hbar.style.top = ny + "px";
	}

}

// Restore dragBar to start position when loading new layer
dw_scrollObj.prototype.restoreScrollbars = function() {
	var bar;
	if (this.vBarId) {
		bar = document.getElementById(this.vBarId);
		bar.style.left = bar.minX + "px"; bar.style.top = bar.minY + "px";
	}
	if (this.hBarId) {
		bar = document.getElementById(this.hBarId);
		bar.style.left = bar.minX + "px"; bar.style.top = bar.minY + "px";
	}
}

// Size dragBar in proportion to size of content in layer
// called on_load of layer if bSizeDragBar prop true
dw_scrollObj.prototype.setBarSize = function() {
	//console.log('orly?');
	var bar;
	var lyr = document.getElementById(this.lyrId);
	var wn = document.getElementById(this.id);
	if (this.vBarId) {
		bar = document.getElementById(this.vBarId);

		//thar.. i fixed it >.<
		//(bar.trkHt>0? bar.trkHt - 2*bar.minY:0) ... whatever...Oo
		//console.log(this.vBarId);
		//console.log(this.id +' '+ wn.offsetHeight);
		//console.log(this.lyrId +' '+lyr.offsetHeight);
		//wn.offsetHeight = 66;
		//console.log(wn.id +' '+ wn.offsetHeight);
		//console.log(lyr.id +' '+ lyr.offsetHeight);
		bar.style.height = 
		(lyr.offsetHeight > wn.offsetHeight) ? 
			bar.trkHt / ( lyr.offsetHeight / wn.offsetHeight ) + "px" :
			(bar.trkHt > 0 ?
				bar.trkHt - 2 * bar.minY :
				0
			) + "px";
		
		//console.log(bar.style.height);
		//bar.style.height = 20+'px';
		bar.maxY = bar.trkHt - bar.offsetHeight - bar.minY;
	}
	if (this.hBarId) {
		//console.log('da');
		bar = document.getElementById(this.hBarId);
		bar.style.width = (this.wd > wn.offsetWidth)? bar.trkWd / ( this.wd / wn.offsetWidth ) + "px": bar.trkWd - 2*bar.minX + "px";
		bar.maxX = bar.trkWd - bar.offsetWidth - bar.minX;
	}
}

// called from load method
dw_scrollObj.prototype.on_load = function() {
	this.restoreScrollbars();
	if (this.bSizeDragBar) this.setBarSize();
}

dw_scrollObj.prototype.on_scroll = dw_scrollObj.prototype.on_slide = function(x,y) { this.updateScrollbar(x,y); }

// obtain and discard references to relevant dragBar
dw_scrollObj.prototype.on_scroll_start = dw_scrollObj.prototype.on_slide_start = function() {
	if ( this.vBarId ) this.vbar = document.getElementById(this.vBarId);
	if ( this.hBarId ) this.hbar = document.getElementById(this.hBarId);
}

dw_scrollObj.prototype.on_scroll_end = dw_scrollObj.prototype.on_slide_end = function(x, y) {
	this.updateScrollbar(x,y);
	this.lyr = null; this.bar = null;
}

/*  dw_event.js (version date Feb 2004) */

var dw_event = {

	add: function(obj, etype, fp, cap) {
		cap = cap || false;
		if (obj.addEventListener) obj.addEventListener(etype, fp, cap);
		else if (obj.attachEvent) obj.attachEvent("on" + etype, fp);
	},

	remove: function(obj, etype, fp, cap) {
		cap = cap || false;
		if (obj.removeEventListener) obj.removeEventListener(etype, fp, cap);
		else if (obj.detachEvent) obj.detachEvent("on" + etype, fp);
	},

	DOMit: function(e) {
		e = e? e: window.event;
		e.tgt = e.srcElement? e.srcElement: e.target;

		if (!e.preventDefault) e.preventDefault = function () { return false; }
		if (!e.stopPropagation) e.stopPropagation = function () { if (window.event) window.event.cancelBubble = true; }

		return e;
	}

}

/*
##
##
##
*/

var isScrolling          = false;
var scrollDirection      = '';
var scrollTimeoutHandler = null;

function KeyEvent( wnId, theKeyCode )
{
	switch( theKeyCode )
	{
		case 33:	// 'Page up'
		case 38:	// 'Cursor up'
		dw_scrollObj.factorSpeed(wnId,1.1);
		KeyScroll( wnId, 'up' );
		break;
		case 34:	// 'Page down'
		case 40:	// 'Cursor down'
		dw_scrollObj.factorSpeed(wnId,1.1);
		KeyScroll( wnId, 'down' );
		break;
		default:
		break;
	}
}

function KeyScroll( wnId, myDirection )
{
	if( isScrolling && (scrollDirection != myDirection) ) KeyScrollStop()

	scrollDirection = myDirection;

	if( ! isScrolling )
	{
		dw_scrollObj.initScroll(wnId,myDirection);
		isScrolling = true;
	}
}

function KeyScrollStop( wnId )
{
	if( scrollTimeoutHandler ) window.clearTimeout( scrollTimeoutHandler );

	isScrolling = false;
	scrollDirection = '';

	dw_scrollObj.stopScroll(wnId);
	dw_scrollObj.defaultSpeed(wnId);

}

/* BOH */
/** Event handler for mouse wheel event.
*/
function wheel(event){
	var delta = 0;
	if (!event) /* For IE. */
	event = window.event;
	if (event.wheelDelta) { /* IE/Opera. */
		delta = event.wheelDelta/120;
		/** In Opera 9, delta differs in sign as compared to IE.
		*/
		if (window.opera)
		delta = -delta;
	}
	else if (event.detail) { /** Mozilla case. */
		/** In Mozilla, sign of delta is different than in IE.
		* Also, delta is multiple of 3.
		*/
		delta = -event.detail;
	}
	/** If delta is nonzero, handle it.
	* Basically, delta is now positive if wheel was scrolled up,
	* and negative, if wheel was scrolled down.
	*/
	if (delta)
	handle(delta);
	/** Prevent default actions caused by mouse wheel.
	* That might be ugly, but we handle scrolls somehow
	* anyway, so don't bother here..
	*/
	if (event.preventDefault)
	event.preventDefault();
	event.returnValue = false;

	if (event.stopPropagation){
		event.stopPropagation();
	}
	else {
		window.event.cancelBubble = true;
	}
}
/*	       END $Id: scroller.js 1735 2007-12-11 15:50:22Z bernd $ END   '*/