/* =======================================================

* ypSimpleScroll

* 3/11/2001

* 

* http://www.yougnpup.net/

* ======================================================= */

ypSimpleScroll.prototype.scrollNorth = function() { this.startScroll(90) }

ypSimpleScroll.prototype.scrollSouth = function() { this.startScroll(270) }

ypSimpleScroll.prototype.scrollWest = function() { this.startScroll(180) }

ypSimpleScroll.prototype.scrollEast = function() { this.startScroll(0) }

ypSimpleScroll.prototype.startScroll = function(deg, speed) {

if (this.loaded)

{

if (this.aniTimer) window.clearTimeout(this.aniTimer)

this.overrideScrollAngle(deg)

this.speed = speed ? speed : this.origSpeed

this.lastTime = (new Date()).getTime() - this.y.minRes

this.aniTimer = window.setTimeout(this.gRef + ".scroll()", 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() {

this.aniTimer = window.setTimeout(this.gRef + ".scroll()", 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

}

}

}

function ypSimpleScroll(id, left, top, width, height, speed, contentWidth, initLeft, initTop)

{

var y = this.y = ypSimpleScroll

if (!initLeft) initLeft = 0

if (!initTop) initTop = 0

if (!contentWidth) contentWidth = width

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 = initTop

this.scrollLeft = initLeft

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:' + (-initLeft) + 'px; top:' + (-initTop) + 'px; width:' + contentWidth + '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 = Math.max(this.y.ns4 ? this.content.document.height : this.content.offsetHeight, this.clipH)

this.docW = Math.max(this.y.ns4 ? this.content.document.width : this.content.offsetWidth, this.clipW)

this.scrollH = this.docH - this.clipH

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)

}