defaultStep=4
step=defaultStep



function scrollDivDown(id){
	document.getElementById(id).scrollTop+=step
	timerDown=setTimeout("scrollDivDown('"+id+"')",10)
}

function scrollDivUp(id){
	document.getElementById(id).scrollTop-=step
	timerUp=setTimeout("scrollDivUp('"+id+"')",10)
}



// ----- Second Part ---


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 IS passed when using attachEvent though ...
		if (!e.target) e.target = e.srcElement;
		if (!e.preventDefault) e.preventDefault = function () { e.returnValue = false; return false; }
		if (!e.stopPropagation) e.stopPropagation = function () { e.cancelBubble = true; }
		return e;
	},

	getTarget: function(e) {
		e = dw_Event.DOMit(e); var tgt = e.target;
		if (tgt.nodeType != 1) tgt = tgt.parentNode; // safari...
		return tgt;
	}

}


function addLoadEvent(func) {
	var oldQueue = window.onload? window.onload: function() {};
	window.onload = function() {
		oldQueue();
		func();
	}
}

//--

function dw_scrollObj(wndoId, lyrId, horizId) {
	var wn = document.getElementById(wndoId);
	this.id = wndoId; dw_scrollObj.col[this.id] = this;
	this.animString = "dw_scrollObj.col." + this.id;
	this.load(lyrId, horizId);

	if (wn.addEventListener) {
		wn.addEventListener('DOMMouseScroll', dw_scrollObj.doOnMouseWheel, false);
	}
	wn.onmousewheel = dw_scrollObj.doOnMouseWheel;
}

dw_scrollObj.isSupported = function () {
	if ( document.getElementById && document.getElementsByTagName
	&& document.addEventListener || document.attachEvent ) {
		return true;
	}
	return false;
}

dw_scrollObj.col = {};
dw_scrollObj.defaultSpeed = dw_scrollObj.prototype.speed = 100;
dw_scrollObj.defaultSlideDur = dw_scrollObj.prototype.slideDur = 500;


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

dw_scrollObj.prototype.on_glidescroll = function() {}
dw_scrollObj.prototype.on_glidescroll_start = function() {}
dw_scrollObj.prototype.on_glidescroll_stop = function() {}
dw_scrollObj.prototype.on_glidescroll_end = function() {}

dw_scrollObj.prototype.load = function(lyrId, horizId) {
	var wndo, lyr;
	if (this.lyrId) {
		lyr = document.getElementById(this.lyrId);
		lyr.style.visibility = "hidden";
	}

	if(document.getElementById(lyrId))
	{
		this.lyr = lyr = document.getElementById(lyrId);
		this.lyr.style.position = 'absolute';
		this.lyrId = lyrId;
		this.horizId = horizId || null;
	}

	wndo = document.getElementById(this.id);
	this.y = 0; this.x = 0; this.shiftTo(0,0);
	this.getDims(wndo, lyr);
	lyr.style.visibility = "visible";
	this.ready = true; this.on_load();
}

dw_scrollObj.prototype.shiftTo = function(x, y) {
	if (this.lyr) {
		this.lyr.style.left = (this.x = x) + "px";
		this.lyr.style.top = (this.y = y) + "px";
	}
}

dw_scrollObj.prototype.getX = function() { return this.x; }
dw_scrollObj.prototype.getY = function() { return this.y; }

dw_scrollObj.prototype.getDims = function(wndo, lyr) {
	this.wd = this.horizId? document.getElementById( this.horizId ).offsetWidth: lyr.offsetWidth;
	this.maxX = (this.wd - wndo.offsetWidth > 0)? this.wd - wndo.offsetWidth: 0;
	this.maxY = (lyr.offsetHeight - wndo.offsetHeight > 0)? lyr.offsetHeight - wndo.offsetHeight: 0;
}

dw_scrollObj.prototype.updateDims = function() {
	var wndo = document.getElementById(this.id);
	var lyr = document.getElementById( this.lyrId );
	this.getDims(wndo, lyr);
	this.on_update();
}


dw_scrollObj.prototype.initScrollVals = function(deg, speed) {
	if (!this.ready) return;
	if (this.timerId) {
		clearInterval(this.timerId); this.timerId = 0;
	}
	this.speed = speed || dw_scrollObj.defaultSpeed;
	this.fx = (deg == 0)? -1: (deg == 180)? 1: 0;
	this.fy = (deg == 90)? 1: (deg == 270)? -1: 0;
	this.endX = (deg == 90 || deg == 270)? this.x: (deg == 0)? -this.maxX: 0;
	this.endY = (deg == 0 || deg == 180)? this.y: (deg == 90)? 0: -this.maxY;
	this.lyr = document.getElementById(this.lyrId);
	this.lastTime = new Date().getTime();
	this.on_scroll_start(this.x, this.y);
	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 + Math.round(this.fx * d); var y = this.y + Math.round(this.fy * d);
		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(x, y);
			this.on_scroll(x, y);
		} else {
			clearInterval(this.timerId); this.timerId = 0;
			this.shiftTo(this.endX, this.endY);
			this.on_scroll(this.endX, this.endY);
			this.on_scroll_end(this.endX, this.endY);
		}
	}
}


dw_scrollObj.prototype.ceaseScroll = function() {
	if (!this.ready) return;
	if (this.timerId) {
		clearInterval(this.timerId); this.timerId = 0;
	}
	this.on_scroll_stop(this.x, this.y);
}


dw_scrollObj.prototype.initScrollByVals = function(dx, dy, dur) {
	if ( !this.ready || this.sliding ) return;
	this.startX = this.x; this.startY = this.y;
	this.destX = this.destY = this.distX = this.distY = 0;
	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.glideScrollPrep(this.destX, this.destY, dur);
}

dw_scrollObj.prototype.initScrollToVals = function(destX, destY, dur) {
	if ( !this.ready || this.sliding ) return;
	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.glideScrollPrep(this.destX, this.destY, dur);
}

dw_scrollObj.prototype.glideScrollPrep = function(destX, destY, dur) {
	this.slideDur = (typeof dur == 'number')? dur: dw_scrollObj.defaultSlideDur;
	this.per = Math.PI/(2 * this.slideDur); this.sliding = true;
	this.lyr = document.getElementById(this.lyrId);
	this.startTime = new Date().getTime();
	this.timerId = setInterval(this.animString + ".doGlideScroll()",10);
	this.on_glidescroll_start(this.startX, this.startY);
}

dw_scrollObj.prototype.doGlideScroll = function() {
	var elapsed = new Date().getTime() - this.startTime;
	if (elapsed < this.slideDur) {
		var x = this.startX + Math.round( this.distX * Math.sin(this.per*elapsed) );
		var y = this.startY + Math.round( this.distY * Math.sin(this.per*elapsed) );
		this.shiftTo(x, y);
		this.on_glidescroll(x, y);
	} else {
		clearInterval(this.timerId); this.timerId = 0; this.sliding = false;
		this.shiftTo(this.destX, this.destY);
		this.on_glidescroll(this.destX, this.destY);
		this.on_glidescroll_stop(this.destX, this.destY);

		if ( this.distX && (this.destX == 0 || this.destX == -this.maxX)
		|| this.distY && (this.destY == 0 || this.destY == -this.maxY) ) {
			this.on_glidescroll_end(this.destX, this.destY);
		}
	}
}


dw_scrollObj.handleMouseWheel = function(id, delta) {
	var wndo = dw_scrollObj.col[id];
	var x = wndo.x;
	var y = wndo.y;
	wndo.on_scroll_start(x,y);
	var ny;
	ny = 12  * delta + y
	ny = (ny < 0 && ny >= -wndo.maxY)? ny: (ny < -wndo.maxY)? -wndo.maxY: 0;
	wndo.shiftTo(x, ny);
	wndo.on_scroll(x, ny);
}

dw_scrollObj.doOnMouseWheel = function(e) {
	var delta = 0;
	if (!e) e = window.event;
	if (e.wheelDelta) {
		delta = e.wheelDelta/120;
		if (window.opera) delta = -delta;
	} else if (e.detail) {
		delta = -e.detail/3;
	}
	if (delta) {
		dw_scrollObj.handleMouseWheel(this.id, delta);
	}
	if (e.preventDefault) e.preventDefault();
	e.returnValue = false;
}

dw_scrollObj.GeckoTableBugFix = function() {}



function dw_getLayerOffset(el, oCont, sOff) {
	var off = "offset" + sOff.charAt(0).toUpperCase() + sOff.slice(1);
	var val = el[off];
	while ( (el = el.offsetParent) != oCont )
	val += el[off];
	var clientOff = off.replace("offset", "client");
	if ( el[clientOff] ) val += el[clientOff];
	return val;
}

//-------


function dw_Slidebar(barId, trackId, axis, x, y) {
	var bar = document.getElementById(barId);
	var track = document.getElementById(trackId);
	this.barId = barId; this.trackId = trackId;
	this.axis = axis; this.x = x || 0; this.y = y || 0;
	dw_Slidebar.col[this.barId] = this;
	this.bar = bar;  this.shiftTo(x, y);


	this.trkHt = track.offsetHeight;
	this.trkWd = track.offsetWidth;

	if (axis == 'v') {
		this.maxY = this.trkHt - bar.offsetHeight - y;
		this.maxX = x; this.minX = x; this.minY = y;
	} else {
		this.maxX = this.trkWd - bar.offsetWidth - x;
		this.minX = x; this.maxY = y; this.minY = y;
	}

	this.on_drag_start =  this.on_drag =   this.on_drag_end =
	this.on_slide_start = this.on_slide =  this.on_slide_end = function() {}

	bar.onmousedown = dw_Slidebar.prepDrag;

	track.onmousedown = function(e) { dw_Slidebar.prepSlide(barId, e); }
	this.bar = bar = null; track = null;
}

dw_Slidebar.col = {};
dw_Slidebar.current = null;

dw_Slidebar.prototype.slideDur = 500;


dw_Slidebar.prepSlide = function(barId, e) {
	var _this = dw_Slidebar.col[barId];
	dw_Slidebar.current = _this;
	var bar = _this.bar = document.getElementById(barId);

	if ( _this.timer ) { clearInterval(_this.timer); _this.timer = 0; }
	e = e? e: window.event;

	e.offX = (typeof e.layerX != "undefined")? e.layerX: e.offsetX;
	e.offY = (typeof e.layerY != "undefined")? e.layerY: e.offsetY;
	_this.startX = parseInt(bar.style.left); _this.startY = parseInt(bar.style.top);

	if (_this.axis == "v") {
		_this.destX = _this.startX;
		_this.destY = (e.offY < _this.startY)? e.offY: e.offY - bar.offsetHeight;
		_this.destY = Math.min( Math.max(_this.destY, _this.minY), _this.maxY );
	} else {
		_this.destX = (e.offX < _this.startX)? e.offX: e.offX - bar.offsetWidth;
		_this.destX = Math.min( Math.max(_this.destX, _this.minX), _this.maxX );
		_this.destY = _this.startY;
	}
	_this.distX = _this.destX - _this.startX; _this.distY = _this.destY - _this.startY;
	_this.per = Math.PI/(2 * _this.slideDur);
	_this.slideStartTime = new Date().getTime();
	_this.on_slide_start(_this.startX, _this.startY);
	_this.timer = setInterval("dw_Slidebar.doSlide()", 10);
}

dw_Slidebar.doSlide = function() {
	var _this = dw_Slidebar.current;
	var elapsed = new Date().getTime() - _this.slideStartTime;
	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(x,y);
		_this.on_slide(x, y);
	} else {
		clearInterval(_this.timer);
		_this.shiftTo(_this.destX,  _this.destY);
		_this.on_slide(_this.destX,  _this.destY);
		_this.on_slide_end(_this.destX, _this.destY);
		dw_Slidebar.current = null;
	}
}

dw_Slidebar.prepDrag = function (e) {
	var bar = this;
	var barId = this.id;
	var _this = dw_Slidebar.col[barId];
	dw_Slidebar.current = _this;
	_this.bar = bar;
	e = dw_Event.DOMit(e);
	if ( _this.timer ) { clearInterval(_this.timer); _this.timer = 0; }
	_this.downX = e.clientX; _this.downY = e.clientY;
	_this.startX = parseInt(bar.style.left);
	_this.startY = parseInt(bar.style.top);
	_this.on_drag_start(_this.startX, _this.startY);
	dw_Event.add( document, "mousemove", dw_Slidebar.doDrag, true );
	dw_Event.add( document, "mouseup",   dw_Slidebar.endDrag,  true );
	e.stopPropagation(); e.preventDefault();
}

dw_Slidebar.doDrag = function(e) {
	if ( !dw_Slidebar.current ) return;
	var _this = dw_Slidebar.current;
	var bar = _this.bar;
	e = dw_Event.DOMit(e);
	var nx = _this.startX + e.clientX - _this.downX;
	var ny = _this.startY + e.clientY - _this.downY;
	nx = Math.min( Math.max( _this.minX, nx ), _this.maxX);
	ny = Math.min( Math.max( _this.minY, ny ), _this.maxY);
	_this.shiftTo(nx, ny);
	_this.on_drag(nx, ny);
	e.preventDefault(); e.stopPropagation();
}

dw_Slidebar.endDrag = function() {
	if ( !dw_Slidebar.current ) return;
	var _this = dw_Slidebar.current;
	var bar = _this.bar;
	dw_Event.remove( document, "mousemove", dw_Slidebar.doDrag, true );
	dw_Event.remove( document, "mouseup",   dw_Slidebar.endDrag,  true );
	_this.on_drag_end( parseInt(bar.style.left), parseInt(bar.style.top) );
	dw_Slidebar.current = null;
}

dw_Slidebar.prototype.shiftTo = function(x, y) {
	if ( this.bar ) {
		this.bar.style.left = x + "px";
		this.bar.style.top = y + "px";
	}
}


dw_scrollObj.prototype.setUpScrollbar = function(barId, trkId, axis, offx, offy, bSize) {
	var scrollbar = new dw_Slidebar(barId, trkId, axis, offx, offy);
	if (axis == "v") {
		this.vBarId = barId;
	} else {
		this.hBarId = barId;
	}
	scrollbar.wndoId = this.id;
	scrollbar.bSizeDragBar = (bSize == false)? false: true;
	if (scrollbar.bSizeDragBar) {
		dw_Scrollbar_Co.setBarSize(this, scrollbar);
	}
	dw_Scrollbar_Co.setEvents(this, scrollbar);
}


dw_Scrollbar_Co = {


	setBarSize: function(scrollObj, barObj) {
		var lyr = document.getElementById(scrollObj.lyrId);
		var wn = document.getElementById(scrollObj.id);
		if ( barObj.axis == 'v' ) {
			var bar = document.getElementById(scrollObj.vBarId);
			bar.style.height = (lyr.offsetHeight > wn.offsetHeight)?
			barObj.trkHt / ( lyr.offsetHeight / wn.offsetHeight ) + "px":
			barObj.trkHt - ( 2 * barObj.minY ) + "px";
			barObj.maxY = barObj.trkHt - bar.offsetHeight - barObj.minY;
		} else if ( barObj.axis == 'h' ) {
			var bar = document.getElementById(scrollObj.hBarId);
			bar.style.width = (scrollObj.wd > wn.offsetWidth)?
			barObj.trkWd / ( scrollObj.wd / wn.offsetWidth ) + "px":
			barObj.trkWd - ( 2 * barObj.minX ) + "px";
			barObj.maxX = barObj.trkWd - bar.offsetWidth - barObj.minX;
		}
	},


	resetBars: function(scrollObj) {
		var barObj, bar;
		if (scrollObj.vBarId) {
			barObj = dw_Slidebar.col[scrollObj.vBarId];
			bar = document.getElementById(scrollObj.vBarId);
			bar.style.left = barObj.minX + "px"; bar.style.top = barObj.minY + "px";
			if (barObj.bSizeDragBar) {
				dw_Scrollbar_Co.setBarSize(scrollObj, barObj);
			}
		}
		if (scrollObj.hBarId) {
			barObj = dw_Slidebar.col[scrollObj.hBarId];
			bar = document.getElementById(scrollObj.hBarId);
			bar.style.left = barObj.minX + "px"; bar.style.top = barObj.minY + "px";
			if (barObj.bSizeDragBar) {
				dw_Scrollbar_Co.setBarSize(scrollObj, barObj);
			}
		}
	},

	setEvents: function(scrollObj, barObj) {

		this.addEvent(scrollObj, 'on_load', function() { dw_Scrollbar_Co.resetBars(scrollObj); } );
		this.addEvent(scrollObj, 'on_scroll_start', function() { dw_Scrollbar_Co.getBarRefs(scrollObj) } );
		this.addEvent(scrollObj, 'on_glidescroll_start', function() { dw_Scrollbar_Co.getBarRefs(scrollObj) } );
		this.addEvent(scrollObj, 'on_scroll', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y) } );
		this.addEvent(scrollObj, 'on_glidescroll', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y) } );
		this.addEvent(scrollObj, 'on_scroll_stop', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y); } );
		this.addEvent(scrollObj, 'on_glidescroll_stop', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y); } );
		this.addEvent(scrollObj, 'on_scroll_end', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y); } );
		this.addEvent(scrollObj, 'on_glidescroll_end', function(x,y) { dw_Scrollbar_Co.updateScrollbar(scrollObj, x, y); } );


		this.addEvent(barObj, 'on_slide_start', function() { dw_Scrollbar_Co.getWndoLyrRef(barObj) } );
		this.addEvent(barObj, 'on_drag_start', function() { dw_Scrollbar_Co.getWndoLyrRef(barObj) } );
		this.addEvent(barObj, 'on_slide', function(x,y) { dw_Scrollbar_Co.updateScrollPosition(barObj, x, y) } );
		this.addEvent(barObj, 'on_drag', function(x,y) { dw_Scrollbar_Co.updateScrollPosition(barObj, x, y) } );
		this.addEvent(barObj, 'on_slide_end', function(x,y) { dw_Scrollbar_Co.updateScrollPosition(barObj, x, y); } );
		this.addEvent(barObj, 'on_drag_end', function(x,y) { dw_Scrollbar_Co.updateScrollPosition(barObj, x, y); } );

	},


	addEvent: function(o, ev, fp) {
		var oldEv = o[ev];
		if ( typeof oldEv != 'function' ) {

			o[ev] = function (x,y) { fp(x,y); }
		} else {
			o[ev] = function (x,y) {
				oldEv(x,y );
				fp(x,y);
			}
		}
	},


	updateScrollbar: function(scrollObj, x, y) {
		var nx, ny;
		if ( scrollObj.vBar && scrollObj.maxY ) {
			var vBar = scrollObj.vBar;
			ny = -( y * ( (vBar.maxY - vBar.minY) / scrollObj.maxY ) - vBar.minY );
			ny = Math.min( Math.max(ny, vBar.minY), vBar.maxY);
			if (vBar.bar) {
				nx = parseInt(vBar.bar.style.left);
				vBar.shiftTo(nx, ny);
			}
		}
		if ( scrollObj.hBar && scrollObj.maxX ) {
			var hBar = scrollObj.hBar;
			nx = -( x * ( (hBar.maxX - hBar.minX) / scrollObj.maxX ) - hBar.minX );
			nx = Math.min( Math.max(nx, hBar.minX), hBar.maxX);
			if (hBar.bar) {
				ny = parseInt(hBar.bar.style.top);
				hBar.shiftTo(nx, ny);
			}
		}
	},

	updateScrollPosition: function(barObj, x, y) {
		var nx, ny; var wndo = barObj.wndo;
		if ( !wndo.lyr ) {
			wndo.lyr = document.getElementById(wndo.lyrId);
		}
		if (barObj.axis == "v") {
			nx = wndo.x;
			ny = -(y - barObj.minY) * ( wndo.maxY / (barObj.maxY - barObj.minY) ) || 0;
		} else {
			ny = wndo.y;
			nx = -(x - barObj.minX) * ( wndo.maxX / (barObj.maxX - barObj.minX) ) || 0;
		}
		wndo.shiftTo(nx, ny);
	},


	getBarRefs: function(scrollObj) {
		if ( scrollObj.vBarId ) {
			scrollObj.vBar = dw_Slidebar.col[scrollObj.vBarId];
			scrollObj.vBar.bar = document.getElementById(scrollObj.vBarId);
		}
		if ( scrollObj.hBarId ) {
			scrollObj.hBar = dw_Slidebar.col[scrollObj.hBarId];
			scrollObj.hBar.bar = document.getElementById(scrollObj.hBarId);
		}
	},

	getWndoLyrRef: function(barObj) {
		var wndo = barObj.wndo = dw_scrollObj.col[ barObj.wndoId ];
		if ( wndo && !wndo.lyr ) {
			wndo.lyr = document.getElementById(wndo.lyrId);
		}
	}

}

//----


dw_writeStyleSheet = function(file) {
	document.write('<link rel="stylesheet" href="' + file + '" media="screen" />');
}

function dw_addLinkCSS(file) {
	if ( !document.createElement ) return;
	var el = document.createElement("link");
	el.setAttribute("rel", "stylesheet");
	el.setAttribute("type", "text/css");
	el.setAttribute("media", "screen");
	el.setAttribute("href", file);
	document.getElementsByTagName('head')[0].appendChild(el);
}

dw_scrollObj.prototype.setUpLoadLinks = function(controlsId) {
	var wndoId = this.id; var el = document.getElementById(controlsId);
	var links = el.getElementsByTagName('a');
	var cls, parts;
	for (var i=0; links[i]; i++) {
		cls = dw_scrollObj.get_DelimitedClass( links[i].className );
		parts = cls.split('_');
		if ( parts[0] == 'load' && parts[1] == wndoId && parts.length > 2 ) {

			var lyrId = parts[2]; var horizId = parts[3]? parts[3]: null;
			dw_Event.add( links[i], 'click', function (wndoId, lyrId, horizId) {
				return function (e) {
					dw_scrollObj.col[wndoId].load(lyrId, horizId);
					if (e && e.preventDefault) e.preventDefault();
					return false;
				}
			}(wndoId, lyrId, horizId) );
		}
	}
}

dw_scrollObj.prototype.setUpScrollControls = function(controlsId, autoHide, axis) {
	var wndoId = this.id; var el = document.getElementById(controlsId);
	if ( autoHide && axis == 'v' || axis == 'h' ) {
		dw_scrollObj.handleControlVis(controlsId, wndoId, axis);
		dw_Scrollbar_Co.addEvent( this, 'on_load', function() { dw_scrollObj.handleControlVis(controlsId, wndoId, axis); } );
		dw_Scrollbar_Co.addEvent( this, 'on_update', function() { dw_scrollObj.handleControlVis(controlsId, wndoId, axis); } );
	}

	var links = el.getElementsByTagName('a'), cls, eType;
	for (var i=0; links[i]; i++) {
		cls = dw_scrollObj.get_DelimitedClass( links[i].className );
		eType = dw_scrollObj.getEv_FnType( cls.slice(0, cls.indexOf('_') ) );
		switch ( eType ) {
			case 'mouseover' :
			case 'mousedown' :
			dw_scrollObj.handleMouseOverDownLinks(links[i], wndoId, cls);
			break;
			case 'scrollToId':
			dw_scrollObj.handleScrollToId(links[i], wndoId, cls);
			break;
			case 'scrollTo' :
			case 'scrollBy':
			case 'click':
			dw_scrollObj.handleClick(links[i], wndoId, cls) ;
			break;
		}
	}
}

dw_scrollObj.handleMouseOverDownLinks = function (linkEl, wndoId, cls) {
	var parts = cls.split('_'); var eType = parts[0];
	var re = /^(mouseover|mousedown)_(up|down|left|right)(_[\d]+)?$/;

	if ( re.test(cls) ) {
		var eAlt = (eType == 'mouseover')? 'mouseout': 'mouseup';
		var dir = parts[1];  var speed = parts[2] || null;
		var deg = (dir == 'up')? 90: (dir == 'down')? 270: (dir == 'left')? 180: 0;

		dw_Event.add(linkEl, eType, function (e) { dw_scrollObj.col[wndoId].initScrollVals(deg, speed); } );
		dw_Event.add(linkEl, eAlt, function (e) { dw_scrollObj.col[wndoId].ceaseScroll(); } );

		if ( eType == 'mouseover') {
			dw_Event.add( linkEl, 'mousedown', function (e) { dw_scrollObj.col[wndoId].speed *= 3; } );
			dw_Event.add( linkEl, 'mouseup', function (e) {
				dw_scrollObj.col[wndoId].speed = dw_scrollObj.prototype.speed; } );
		}
		dw_Event.add( linkEl, 'click', function(e) { if (e && e.preventDefault) e.preventDefault(); return false; } );
	}
}


dw_scrollObj.handleScrollToId = function (linkEl, wndoId, cls) {
	var parts = cls.split('_'); var id = parts[1], lyrId, dur;
	if ( parts[2] ) {
		if ( isNaN( parseInt(parts[2]) ) ) {
			lyrId = parts[2];
			dur = ( parts[3] && !isNaN( parseInt(parts[3]) ) )? parseInt(parts[3]): null;
		} else {
			dur = parseInt( parts[2] );
		}
	}
	dw_Event.add( linkEl, 'click', function (e) {
		dw_scrollObj.scrollToId(wndoId, id, lyrId, dur);
		if (e && e.preventDefault) e.preventDefault();
		return false;
	} );
}


dw_scrollObj.scrollToId = function(wndoId, id, lyrId, dur) {
	var wndo = dw_scrollObj.col[wndoId];
	var el = document.getElementById(id);
	if (el) {
		if ( lyrId ) {
			if ( document.getElementById(lyrId) && wndo.lyrId != lyrId ) {
				wndo.load(lyrId);
			}
		}
		var lyr = document.getElementById(wndo.lyrId);
		var x = dw_getLayerOffset(el, lyr, 'left');
		var y = dw_getLayerOffset(el, lyr, 'top');
		wndo.initScrollToVals(x, y, dur);
	}
}

dw_scrollObj.handleClick = function (linkEl, wndoId, cls) {
	var wndo = dw_scrollObj.col[wndoId];
	var parts = cls.split('_'); var eType = parts[0];
	var dur_re = /^([\d]+)$/; var fn, re, x, y, dur;

	switch (eType) {
		case 'scrollTo' :
		fn = 'scrollTo';  re = /^(null|end|[\d]+)$/;
		x = re.test( parts[1] )? parts[1]: '';
		y = re.test( parts[2] )? parts[2]: '';
		dur = ( parts[3] && dur_re.test(parts[3]) )? parts[3]: null;
		break;
		case 'scrollBy':
		fn = 'scrollBy';  re = /^(([m]?[\d]+)|null)$/;
		x = re.test( parts[1] )? parts[1]: '';
		y = re.test( parts[2] )? parts[2]: '';


		if ( !isNaN( parseInt(x) ) ) {
			x = -parseInt(x);
		} else if ( typeof x == 'string' ) {
			x = x.indexOf('m') !=-1 ? x.replace('m', ''): x;
		}
		if ( !isNaN( parseInt(y) ) ) {
			y = -parseInt(y);
		} else if ( typeof y == 'string' ) {
			y = y.indexOf('m') !=-1 ? y.replace('m', ''): y;
		}

		dur = ( parts[3] && dur_re.test(parts[3]) )? parts[3]: null;
		break;

		case 'click':
		var o = dw_scrollObj.getClickParts(cls);
		fn = o.fn; x = o.x; y = o.y; dur = o.dur;
		break;
	}
	if ( x !== '' && y !== '' ) {
		if (x == 'end') { x = wndo.maxX; }
		if (y == 'end') { y = wndo.maxY; }
		if (x === 'null' || x === null) { x = wndo.x; }
		if (y === 'null' || y === null) { y = wndo.y; }

		x = parseInt(x); y = parseInt(y);
		dur = !isNaN( parseInt(dur) )? parseInt(dur): null;

		if (fn == 'scrollBy') {
			dw_Event.add( linkEl, 'click', function (e) {
				dw_scrollObj.col[wndoId].initScrollByVals(x, y, dur);
				if (e && e.preventDefault) e.preventDefault();
				return false;
			} );
		} else if (fn == 'scrollTo') {
			dw_Event.add( linkEl, 'click', function (e) {
				dw_scrollObj.col[wndoId].initScrollToVals(x, y, dur);
				if (e && e.preventDefault) e.preventDefault();
				return false;
			} );
		}
	}
}


dw_scrollObj.getClickParts = function(cls) {
	var parts = cls.split('_');
	var re = /^(up|down|left|right)$/;
	var dir, fn = '', dur, ar, val, x = '', y = '';

	if ( parts.length >= 4 ) {
		ar = parts[1].match(re);
		dir = ar? ar[1]: null;

		re = /^(to|by)$/;
		ar = parts[2].match(re);
		if (ar) {
			fn = (ar[0] == 'to')? 'scrollTo': 'scrollBy';
		}

		val = parts[3];
		re = /^([\d]+)$/;
		dur = ( parts[4] && re.test(parts[4]) )? parts[4]: null;

		switch (fn) {
			case 'scrollBy' :
			if ( !re.test( val ) ) {
				x = ''; y = ''; break;
			}
			switch (dir) {
				case 'up' : x = 0; y = val; break;
				case 'down' : x = 0; y = -val; break;
				case 'left' : x = val; y = 0; break;
				case 'right' : x = -val; y = 0;
			}
			break;
			case 'scrollTo' :
			re = /^(end|[\d]+)$/;
			if ( !re.test( val ) ) {
				x = ''; y = ''; break;
			}
			switch (dir) {
				case 'up' : x = null; y = val; break;
				case 'down' : x = null; y = (val == 'end')? val: -val; break;
				case 'left' : x = val; y = null; break;
				case 'right' : x = (val == 'end')? val: -val; y = null;
			}
			break;
		}
	}
	return { fn: fn, x: x, y: y, dur: dur }
}

dw_scrollObj.getEv_FnType = function(str) {
	var re = /^(mouseover|mousedown|scrollBy|scrollTo|scrollToId|click)$/;
	if (re.test(str) ) {
		return str;
	}
	return '';
}


dw_scrollObj.get_DelimitedClass = function(cls) {
	if ( cls.indexOf('_') == -1 ) {
		return '';
	}
	var whitespace = /\s+/;
	if ( !whitespace.test(cls) ) {
		return cls;
	} else {
		var classes = cls.split(whitespace);
		for(var i = 0; classes[i]; i++) {
			if ( classes[i].indexOf('_') != -1 ) {
				return classes[i];
			}
		}
	}
}

dw_scrollObj.handleControlVis = function(controlsId, wndoId, axis) {
	var wndo = dw_scrollObj.col[wndoId];
	var el = document.getElementById(controlsId);
	if ( ( axis == 'v' && wndo.maxY > 0 ) || ( axis == 'h' && wndo.maxX > 0 ) ) {
		el.style.visibility = 'visible';
	} else {
		el.style.visibility = 'hidden';
	}
}