ff.barScroll = new Object()
ff.barScroll.intPicWidth = 10
ff.barScroll.intArrowHeight = 10
ff.barScroll.intBarHeight = 10
ff.barScroll.xOffset = 10
ff.barScroll.scrollSpeed = 6
ff.barScroll.timer = null

ff.barScroll.init = function(strLayer, blnNoBar, blnNoBarBg){
	ff.barScroll[strLayer] = new Object()
	ff.barScroll[strLayer].h = ff.getH(strLayer)
	ff.barScroll[strLayer].sh = ff.getScrollH(strLayer)
	ff.barScroll[strLayer].y = ff.getY(strLayer)
	if(ff.barScroll[strLayer].sh>ff.barScroll[strLayer].h){
		ff.barScroll[strLayer].maxscroll = ff.barScroll[strLayer].sh - ff.barScroll[strLayer].h
		ff.barScroll[strLayer].curpos = 0

		var x = ff.getX(strLayer) + ff.getW(strLayer) + ff.barScroll.xOffset
		var str1 = "<a href='javascript:void(0)' onmouseover=\"ff.barScroll.arrow('" + strLayer + "', "; var str2 = ")\" onmouseout=\"clearTimeout(ff.barScroll.timer)\"><img src='"; var str3 = "' border='0'></a>"

		if(!ff.getObj(strLayer + "ArrowUp")) ff.createLayer(strLayer + "ArrowUp", x, ff.barScroll[strLayer].y, ff.barScroll.intPicWidth, 5, str1 + "1" + str2 + ff.barScroll.urlUpArrowPic + str3)

		var a = ff.barScroll[strLayer].y+ff.barScroll[strLayer].h-ff.barScroll.intArrowHeight
		ff.createLayer(strLayer + "ArrowDown", x, a, ff.barScroll.intPicWidth, 5, str1 + "-1" + str2 + ff.barScroll.urlDownArrowPic + str3)

		var a = ff.barScroll[strLayer].y+ff.barScroll.intArrowHeight
		var b = ff.barScroll[strLayer].h - 2*ff.barScroll.intArrowHeight

		if(!blnNoBarBg){
			ff.createLayer(strLayer + "BarBg", x, a, ff.barScroll.intPicWidth, 6,  "<img src='" + ff.barScroll.urlBarBgPic + "' name='" + strLayer + "BgPic' width=" + ff.barScroll.intPicWidth + " height=" + b + ">")
			ff.catchMouseEvent("click", "ff.barScroll.click", strLayer+"BarBg")	
		}
		if(!blnNoBar && !(ff.ie && ff.mac && ff.realVersion<5)){
			ff.createLayer(strLayer + "Drag", x, a, ff.barScroll.intPicWidth, 7, "<img name='" + strLayer + "DragPic' src='" + ff.barScroll.urlBarPic + "' border='0'>")
			if(ff.ie) document.ondragstart = function(){ return false}
			ff.catchMouseEvent("mousedown", "ff.barScroll.startDrag", strLayer+"Drag")	
		}
	}
}

ff.barScroll.scroll = function(strLayer, perc) {
	ff.barScroll[strLayer].curpos = Math.floor(perc * ff.barScroll[strLayer].maxscroll)

	var scrollHeight = ff.barScroll[strLayer].h - 2*ff.barScroll.intArrowHeight

	ff.moveTo(strLayer+"Drag", null, perc * (scrollHeight-ff.barScroll.intBarHeight) + ff.barScroll[strLayer].y + ff.barScroll.intArrowHeight)
	ff.moveTo(strLayer, null, ff.barScroll[strLayer].y - ff.barScroll[strLayer].curpos)
	ff.clip(strLayer, ff.barScroll[strLayer].curpos, ff.getW(strLayer), ff.barScroll[strLayer].curpos+ff.barScroll[strLayer].h,0)
}

ff.barScroll.arrow = function(strLayer, direction){
	if(ff.getObj(strLayer)){
		ff.barScroll[strLayer].curpos -= direction*ff.barScroll.scrollSpeed
		if(ff.barScroll[strLayer].curpos<0) ff.barScroll[strLayer].curpos = 0
		else if(ff.barScroll[strLayer].curpos>ff.barScroll[strLayer].maxscroll) ff.barScroll[strLayer].curpos = ff.barScroll[strLayer].maxscroll

		ff.barScroll.scroll(strLayer, ff.barScroll[strLayer].curpos / ff.barScroll[strLayer].maxscroll)
		ff.barScroll.timer = setTimeout("ff.barScroll.arrow('" + strLayer + "', " + direction + ")", 30)
	}
}

ff.barScroll.startDrag = function(evt){
	if(ff.ie) var targetID = window.event.srcElement.parentElement.id
	else if(ff.ns4 || ff.w3c) var targetID = evt.target.name
	ff.barScroll.curDrag = targetID.substr(0,targetID.indexOf("Drag"))
	ff.barScroll.deltaY = ff.getEventY(evt) - ff.getY(ff.barScroll.curDrag + "Drag")
	ff.catchMouseEvent("mousemove", "ff.barScroll.drag")	
	ff.catchMouseEvent("mouseup", "ff.barScroll.stopDrag")
	return false
}

ff.barScroll.stopDrag = function(evt){
	ff.catchMouseEvent("mousemove", "ff.barScroll.drag", null, true)	
	ff.catchMouseEvent("mouseup", "ff.barScroll.stopDrag", null, true)
}

ff.barScroll.drag = function(evt){
	var topY = ff.getEventY(evt) - ff.barScroll.deltaY 
	var scrollTop = ff.barScroll[ff.barScroll.curDrag].y + ff.barScroll.intArrowHeight
	var scrollHeight = ff.barScroll[ff.barScroll.curDrag].h - 2*ff.barScroll.intArrowHeight
		
	var scrollBottom = scrollTop + ff.barScroll[ff.barScroll.curDrag].h - 2*ff.barScroll.intArrowHeight - ff.barScroll.intBarHeight

	if(topY>=scrollTop && topY<=scrollBottom) var scrollPerc = (topY - scrollTop) / (scrollHeight-ff.barScroll.intBarHeight)
	else if(topY<scrollTop) var scrollPerc = 0
	else if(topY>scrollBottom) var scrollPerc = 1

	ff.barScroll.scroll(ff.barScroll.curDrag, scrollPerc)
}

ff.barScroll.click = function(evt){
	if(ff.ie) var targetID = window.event.srcElement.parentElement.id
	else if(ff.ns4 || ff.w3c) var targetID = evt.target.name
	targetID = targetID.substr(0, targetID.length-5)
	var clickY = ff.getEventY(evt) - ff.barScroll[targetID].y - ff.barScroll.intArrowHeight
	var scrollHeight = ff.barScroll[targetID].h - 2*ff.barScroll.intArrowHeight
	ff.barScroll.scroll(targetID, clickY / scrollHeight)
}

ff.barScroll.reset = function(strLayer){
	var objLayer = ff.getObj(strLayer)
	if(objLayer){
		ff.moveTo(strLayer, null, ff.barScroll[strLayer].y)
		ff.clip(strLayer, 0,ff.getW(strLayer),ff.barScroll[strLayer].h,0)
		if(ff.getObj(strLayer)+"Drag") ff.moveTo(strLayer+"Drag", null, ff.barScroll[strLayer].y + ff.barScroll.intArrowHeight)
		ff.barScroll[strLayer].curpos = 0
	}
}

ff.barScroll.hide = function(strLayer){
	ff.hide(strLayer + "ArrowUp")
	ff.hide(strLayer + "ArrowDown")
	ff.hide(strLayer + "BarBg")
	ff.hide(strLayer + "Drag")
}

ff.barScroll.show = function(strLayer){
	ff.show(strLayer + "ArrowUp")
	ff.show(strLayer + "ArrowDown")
	ff.show(strLayer + "BarBg")
	ff.show(strLayer + "Drag")
}

ff.barScroll.moveBy = function(strLayer,x,y){
	ff.moveBy(strLayer + "ArrowUp",x,y)
	ff.moveBy(strLayer + "ArrowDown",x,y)
	ff.moveBy(strLayer + "BarBg",x,y)
	ff.moveBy(strLayer + "Drag",x,y)
}