var theHandle = []; var theRoot = []; var theThumb = []; var theScroll = []; var thumbTravel = []; var ratio = [];

function instantiateScroller(count, id, left, top, width, height, speed){
	if(document.getElementById) {
		theScroll[count] = new ypSimpleScroll(id, left, top, width, height, speed);
	}
}

function createDragger(count, handler, root, thumb, minX, maxX, minY, maxY){
		var buttons = '<div class="up" id="up'+count+'"><a href="#" onmouseover="theScroll['+count+'].scrollNorth(\''+count+'\')" onmouseout="theScroll['+count+'].endScroll()" onclick="return false;"><img src="images/upscroll.gif" width="15" height="15"></a></div><div class="dn"  id="dn'+count+'""><a href="#" onmouseover="theScroll['+count+'].scrollSouth(\''+count+'\')" onmouseout="theScroll['+count+'].endScroll()" onclick="return false;"><img src="images/dnscroll.gif" width="15" height="15"></a></div><div class="thumb" id="'+thumb+'" style="left: 135px; top: 15px;"><img src="images/thumb.gif" width="15" height="15"></div>';
		document.getElementById(root).innerHTML = buttons + document.getElementById(root).innerHTML;

		theRoot[count]   = document.getElementById(root);
		theThumb[count]  = document.getElementById(thumb);
		var thisup = document.getElementById("up"+count);
		var thisdn = document.getElementById("dn"+count);
		theThumb[count].style.left = parseInt(minX+15) + "px";
		thisup.style.left = parseInt(minX+15) + "px";
		thisdn.style.left = parseInt(minX+15) + "px";
		theThumb[count].style.border =0;
		theThumb[count].style.top = parseInt(minY) + "px";
		thisup.style.top = 0 + "px";
		thisdn.style.top = parseInt(minY+maxY) + "px";
		//thisdn.style.top = 15 + "px";

		theScroll[count].load();

		//Drag.init(theHandle[count], theRoot[count]); //not draggable on screen
		Drag.init(theThumb[count], null, minX+15, maxX+15, minY, maxY);
		
		// the number of pixels the thumb can travel vertically (max - min)
		thumbTravel[count] = theThumb[count].maxY - theThumb[count].minY;

		// the ratio between scroller movement and thumbMovement
		ratio[count] = theScroll[count].scrollH / thumbTravel[count];

		theThumb[count].onDrag = function(x, y) {
			theScroll[count].jumpTo(null, Math.round((y - theThumb[count].minY) * ratio[count]));
		}
}	


function addLoadEvent(fn) {
      var old = window.onload;
      if (typeof window.onload != 'function') {
         window.onload = fn;
      }
      else {
         window.onload = function() {
         old();
         fn();
         }
      }
   }
addLoadEvent(function(){
		if(theScroll.length>0) {
		for(var i=0;i<theScroll.length;i++){
			createDragger(i, "handle"+i, "root"+i, "thumb"+i, theScroll[i].clipW, theScroll[i].clipW, 15, theScroll[i].clipH-30);
		}
	}
}) 





ypSimpleScroll.prototype.scrollNorth = function(count) { this.startScroll(90, count) }
ypSimpleScroll.prototype.scrollSouth = function(count) { this.startScroll(270, count) }
ypSimpleScroll.prototype.scrollWest = function(count) { this.startScroll(180, count) }
ypSimpleScroll.prototype.scrollEast = function(count) { this.startScroll(0, count) }

ypSimpleScroll.prototype.startScroll = function(deg, count) {
	if (this.loaded){
		if (this.aniTimer) window.clearTimeout(this.aniTimer)
		this.overrideScrollAngle(deg)
		this.speed = this.origSpeed
		this.lastTime = (new Date()).getTime() - this.y.minRes
		this.aniTimer = window.setTimeout(this.gRef + ".scroll('"+deg+"','"+count+"')", this.y.minRes)
	}
}

ypSimpleScroll.prototype.endScroll = function() {
	if (this.loaded){
		window.clearTimeout(this.aniTimer)
		this.aniTimer = 0;
		this.speed = this.origSpeed
	}
}

ypSimpleScroll.prototype.overrideScrollAngle = function(deg) {
	if (this.loaded){
		deg = deg % 360
		if (deg % 90 == 0) {
			var cos = deg == 0 ? 1 : deg == 180 ? -1 : 0
			var sin = deg == 90 ? -1 : deg == 270 ? 1 : 0
		} 
		else {
			var angle = deg * Math.PI / 180
			var cos = Math.cos(angle)
			var sin = Math.sin(angle)
			sin = -sin
		}
		this.fx = cos / (Math.abs(cos) + Math.abs(sin))
		this.fy = sin / (Math.abs(cos) + Math.abs(sin))
		this.stopH = deg == 90 || deg == 270 ? this.scrollLeft : deg < 90 || deg > 270 ? this.scrollW : 0
		this.stopV = deg == 0 || deg == 180 ? this.scrollTop : deg < 180 ? 0 : this.scrollH
	}
}

ypSimpleScroll.prototype.overrideScrollSpeed = function(speed) {
	if (this.loaded) this.speed = speed
}


ypSimpleScroll.prototype.scrollTo = function(stopH, stopV, aniLen) {
	if (this.loaded){
		if (stopH != this.scrollLeft || stopV != this.scrollTop) {
			if (this.aniTimer) window.clearTimeout(this.aniTimer)
			this.lastTime = (new Date()).getTime()
			var dx = Math.abs(stopH - this.scrollLeft)
			var dy = Math.abs(stopV - this.scrollTop)
			var d = Math.sqrt(Math.pow(dx,2) + Math.pow(dy,2))
			this.fx = (stopH - this.scrollLeft) / (dx + dy)
			this.fy = (stopV - this.scrollTop) / (dx + dy)
			this.stopH = stopH
			this.stopV = stopV
			this.speed = d / aniLen * 1000
			window.setTimeout(this.gRef + ".scroll()", this.y.minRes)
		}
	}
}

ypSimpleScroll.prototype.jumpTo = function(nx, ny) { 
	if (this.loaded){
		nx = Math.min(Math.max(nx, 0), this.scrollW)
		ny = Math.min(Math.max(ny, 0), this.scrollH)
		this.scrollLeft = nx
		this.scrollTop = ny
		if (this.y.ns4)this.content.moveTo(-nx, -ny)
		else {
			this.content.style.left = -nx + "px"
			this.content.style.top = -ny + "px"
		}
	}
}

ypSimpleScroll.minRes = 10
ypSimpleScroll.ie = document.all ? 1 : 0
ypSimpleScroll.ns4 = document.layers ? 1 : 0
ypSimpleScroll.dom = document.getElementById ? 1 : 0
ypSimpleScroll.mac = navigator.platform == "MacPPC"
ypSimpleScroll.mo5 = document.getElementById && !document.all ? 1 : 0

ypSimpleScroll.prototype.scroll = function(deg,count) {
	this.aniTimer = window.setTimeout(this.gRef + ".scroll('"+deg+"','"+count+"')", this.y.minRes)
	var nt = (new Date()).getTime()
	var d = Math.round((nt - this.lastTime) / 1000 * this.speed)
	if (d > 0){
		var nx = d * this.fx + this.scrollLeft
		var ny = d * this.fy + this.scrollTop
		var xOut = (nx >= this.scrollLeft && nx >= this.stopH) || (nx <= this.scrollLeft && nx <= this.stopH)
		var yOut = (ny >= this.scrollTop && ny >= this.stopV) || (ny <= this.scrollTop && ny <= this.stopV)
		if (nt - this.lastTime != 0 && 
			((this.fx == 0 && this.fy == 0) || 
			(this.fy == 0 && xOut) || 
			(this.fx == 0 && yOut) || 
			(this.fx != 0 && this.fy != 0 && 
			xOut && yOut))) {
			this.jumpTo(this.stopH, this.stopV)
			this.endScroll()
		}
		else {
			this.jumpTo(nx, ny)
			this.lastTime = nt
		}
	// (zgtc) now we also update dragger position:
	if(deg=='270')	theThumb[count].style.top = parseInt(((theThumb[count].maxY-theThumb[count].minY)*this.scrollTop/this.stopV)+theThumb[count].minY) + "px"; //ok nomes down
	if(deg=='90')	theThumb[count].style.top = parseInt(((theThumb[count].maxY-theThumb[count].minY)*this.scrollTop/this.scrollH)+theThumb[count].minY) + "px"; //ok nomes down
	}
}

function ypSimpleScroll(id, left, top, width, height, speed) {
	var y = this.y = ypSimpleScroll
	if (document.layers && !y.ns4) history.go(0)
	if (y.ie || y.ns4 || y.dom) {
		this.loaded = false
		this.id = id
		this.origSpeed = speed
		this.aniTimer = false
		this.op = ""
		this.lastTime = 0
		this.clipH = height
		this.clipW = width
		this.scrollTop = 0
		this.scrollLeft = 0
		this.gRef = "ypSimpleScroll_"+id
		eval(this.gRef+"=this")
		var d = document
		d.write('<style type="text/css">')
		d.write('#' + this.id + 'Container { left:' + left + 'px; top:' + top + 'px; width:' + width + 'px; height:' + height + 'px; clip:rect(0 ' + width + ' ' + height + ' 0); overflow:hidden; }')
		d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; }')
		d.write('#' + this.id + 'Content { left:' + (-this.scrollLeft) + 'px; top:' + (-this.scrollTop) + 'px; width:' + width + 'px; }')
		// (zgtc) fix to overwrite p/div/ul width (would be clipped if wider than scroller in css):
		d.write('#' + this.id + 'Container p, #' + this.id + 'Container div {width:' + parseInt(width-10) + 'px; }')
		d.write('</style>')
	}
}

ypSimpleScroll.prototype.load = function() {
	var d, lyrId1, lyrId2
	d = document
	lyrId1 = this.id + "Container"
	lyrId2 = this.id + "Content"
	this.container = this.y.dom ? d.getElementById(lyrId1) : this.y.ie ? d.all[lyrId1] : d.layers[lyrId1]
	this.content = obj2 = this.y.ns4 ? this.container.layers[lyrId2] : this.y.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
	//this.docH = this.content.offsetHeight
	this.docH = Math.max(this.y.ns4 ? this.content.document.height : this.content.offsetHeight, this.clipH)
	//if (this.docH = this.clipH) window.setTimeout(this.docH = Math.max(this.y.ns4 ? this.content.document.height : this.content.offsetHeight, this.clipH), 5000)
	this.docW = Math.max(this.y.ns4 ? this.content.document.width : this.content.offsetWidth, this.clipW)
	//this.scrollH = 4000
	this.scrollH = this.docH - this.clipH
	if (!this.scrollH) this.scrollH = 3700;
	this.scrollW = this.docW - this.clipW
	this.loaded = true
	this.scrollLeft = Math.max(Math.min(this.scrollLeft, this.scrollW),0)
	this.scrollTop = Math.max(Math.min(this.scrollTop, this.scrollH),0)
	this.jumpTo(this.scrollLeft, this.scrollTop)
}



var Drag = {

	obj : null,

	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
	{
		o.onmousedown	= Drag.start;

		o.hmode			= bSwapHorzRef ? false : true ;
		o.vmode			= bSwapVertRef ? false : true ;

		o.root = oRoot && oRoot != null ? oRoot : o ;

		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";

		o.minX	= typeof minX != 'undefined' ? minX : null;
		o.minY	= typeof minY != 'undefined' ? minY : null;
		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
		o.maxY	= typeof maxY != 'undefined' ? maxY : null;

		o.xMapper = fXMapper ? fXMapper : null;
		o.yMapper = fYMapper ? fYMapper : null;

		o.root.onDragStart	= new Function();
		o.root.onDragEnd	= new Function();
		o.root.onDrag	= new Function();
	},

	start : function(e)
	{
		var o = Drag.obj = this;
		e = Drag.fixE(e);
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		o.root.onDragStart(x, y);

		o.lastMouseX	= e.clientX;
		o.lastMouseY	= e.clientY;

		if (o.hmode) {
			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
		} else {
			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
		}

		if (o.vmode) {
			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
		} else {
			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
		}

		document.onmousemove	= Drag.drag;
		document.onmouseup	= Drag.end;

		return false;
	},

	drag : function(e)
	{
		e = Drag.fixE(e);
		var o = Drag.obj;

		var ey	= e.clientY;
		var ex	= e.clientX;
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		var nx, ny;

		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);

		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));

		if (o.xMapper)		nx = o.xMapper(y)
		else if (o.yMapper)	ny = o.yMapper(x)

		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
		Drag.obj.lastMouseX	= ex;
		Drag.obj.lastMouseY	= ey;

		Drag.obj.root.onDrag(nx, ny);
		return false;
	},

	end : function()
	{
		document.onmousemove = null;
		document.onmouseup   = null;
		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
									parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
		Drag.obj = null;
	},

	fixE : function(e)
	{
		if (typeof e == 'undefined') e = window.event;
		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
		return e;
	}
};