var dom = document.getElementById;
var iex = document.all;
var ns4 = document.layers;
var rollOvers = new Object(), rollOverList = new Object();
var mouseX, mouseY, enterX, enterY;
var currentItem, currentText;

function ladeframenach() { 
if(!parent.nav) location.href="../index.htm?" + location.pathname; 
} 






RollOverSet = function() {
this.rollOvers = new Object();
this.rollOverList = new Object();
}

RollOverSet.prototype.addRollOver = function( name, path, ext)
{
var ro = new Object();
ro.path = path;
ro.ext = ext;
this.rollOverList[name] = ro;
}

RollOverSet.prototype.loadRollOvers = function()
{
var name;
for ( name in this.rollOverList ) {
var rol = this.rollOverList[name];
this.rollOvers[name] = new RollOver( rol.path, rol.ext );
}
}

RollOverSet.prototype.mouseOver = function( imgName )
{
getElement(imgName).src = this.rollOvers[imgName].over.src;
}

RollOverSet.prototype.mouseOut = function( imgName )
{
getElement(imgName).src = this.rollOvers[imgName].out.src;
}

function addEvent(event,method)
{
this[event] = method;
if(ns4) this.captureEvents(Event[event.substr(2,event.length).toUpperCase()]);
}

function removeEvent(event)
{
this[event] = null;
if(ns4) this.releaseEvents(Event[event.substr(2,event.length).toUpperCase()]);
}

function getElement(name)
{
var el = dom ? document.getElementById(name) : iex ? document.all[name] : ns4 ? eval("document."+name) : false;
if ( el == null ) return null;
el.css = ns4 ? el : el.style;
el.getTop = function(){return parseInt(el.css.top) || 0};
el.setTop = function(y){el.css.top = ns4 ? y: y+"px"};
el.getLeft = function(){return parseInt(el.css.left) || 0};
el.setLeft = function(x){el.css.left = ns4 ? x: x+"px"};
el.getHeight = function(){return ns4 ? el.document.height : el.offsetHeight};
el.getWidth = function(){return ns4 ? el.document.width : el.offsetWidth};
el.getClipHeight = function(){return ns4 ? el.clip.height : el.offsetHeight};
el.hideVis = function(){el.css.visibility="hidden"};
el.showVis = function(){el.css.visibility="visible"};
el.addEvent = addEvent;
el.removeEvent = removeEvent;
return el;
}

function getYMouse(e)
{
return iex ? event.clientY : e.pageY;
}

document.addEvent = addEvent;
document.removeEvent = removeEvent;

ScrollObj = function(speed, groupName)
{
this.speed = speed;
this.trackObj = getElement(groupName+"ScrollTrack");
// this.upObj = getElement(groupName+"ScrollUp");
// this.downObj = getElement(groupName+"ScrollDown");
this.dragObj = getElement(groupName+"ScrollThumb");
this.contentMaskObj = getElement(groupName+"ContentClip");
this.contentObj = getElement(groupName+"Content");
this.obj = groupName+"ContentObject";
eval(this.obj+"=this");

this.dragHeight = this.dragObj.getHeight()-2 - (iex ? 4 : 0);
this.trackHeight = getElement(groupName+"ScrollThumbTrack").getHeight();
this.trackTop = this.trackObj.getTop();
this.trackLength = this.trackHeight-this.dragHeight;
this.trackBottom = this.trackTop+this.trackLength;
this.contentMaskHeight = this.contentMaskObj.getClipHeight();
this.contentHeight = this.contentObj.getHeight();
this.contentLength = this.contentHeight-this.contentMaskHeight;
this.scrollLength = this.trackLength/this.contentLength;
this.scrollTimer = null;

if (this.contentHeight <= this.contentMaskHeight) {
this.dragObj.hideVis();
// this.upObj.hideVis();
// this.downObj.hideVis();
// this.trackObj.hideVis();
} else {
var self = this;
// this.trackObj.addEvent("onmousedown", function(e){self.scrollJump(e);return false});
// this.upObj.addEvent("onmousedown", function(){self.scroll(self.speed);return false});
// this.upObj.addEvent("onmouseup", function(){self.stopScroll()});
// this.upObj.addEvent("onmouseout", function(){self.stopScroll()});
// this.downObj.addEvent("onmousedown", function(){self.scroll(-self.speed);return false});
// this.downObj.addEvent("onmouseup", function(){self.stopScroll()});
// this.downObj.addEvent("onmouseout", function(){self.stopScroll()});
this.dragObj.addEvent("onmousedown", function(e){self.startDrag(e);return false});
if(iex) this.dragObj.addEvent("ondragstart", function(){return false});
}
}

ScrollObj.prototype.startDrag = function(e)
{
this.dragStartMouse = getYMouse(e);
this.dragStartOffset = this.dragObj.getTop();
var self = this;
document.removeEvent("onmousemove");
document.addEvent("onmousemove", function(e){self.drag(e)});
document.addEvent("onmouseup", function(){self.stopDrag()});
}

ScrollObj.prototype.stopDrag = function() 
{
document.removeEvent("onmousemove");
document.addEvent("onmousemove", getMouse);
document.removeEvent("onmouseup");
}

ScrollObj.prototype.drag = function(e)
{
var currentMouse = getYMouse(e);
// var currentMouse = getMouseY();
var mouseDifference = currentMouse-this.dragStartMouse;
var dragDistance = this.dragStartOffset+mouseDifference;
var dragMovement = (dragDistance<this.trackTop) ? this.trackTop : (dragDistance>this.trackBottom) ? this.trackBottom : dragDistance;
this.dragObj.setTop(dragMovement);
var contentMovement = -(dragMovement-this.trackTop)*(1/this.scrollLength);
this.contentObj.setTop(contentMovement);
}

ScrollObj.prototype.scroll = function(speed)
{
var contentMovement = this.contentObj.getTop()+speed;
var dragMovement = this.trackTop-Math.round(this.contentObj.getTop()*(this.trackLength/this.contentLength));
if(contentMovement > 0){
contentMovement = 0;
}else if(contentMovement < -this.contentLength){
contentMovement = -this.contentLength;
}
if ( dragMovement < this.trackTop ) {
dragMovement = this.trackTop;
} else if ( dragMovement > this.trackBottom ) {
dragMovement = this.trackBottom;
}
this.contentObj.setTop(contentMovement);
this.dragObj.setTop(dragMovement);
this.scrollTimer = window.setTimeout(this.obj+".scroll("+speed+")",25);
}

ScrollObj.prototype.stopScroll = function()
{
if(this.scrollTimer){
window.clearTimeout(this.scrollTimer);
this.scrollTimer = null;
}
}

ScrollObj.prototype.scrollJump = function(e)
{
var currentMouse = getYMouse(e);
var dragDistance = currentMouse-(this.dragHeight/2);
var dragMovement = (dragDistance<this.trackTop) ? this.trackTop : (dragDistance>this.trackBottom) ? this.trackBottom : dragDistance;
this.dragObj.setTop(dragMovement);
var contentMovement = -(dragMovement-this.trackTop)*(1/this.scrollLength);
this.contentObj.setTop(contentMovement);
}





function getMouse(e)
{
mouseY = iex ? event.clientY : e.pageY;
mouseX = iex ? event.clientX : e.pageX;
}

function getMouseY()
{
return mouseY;
}

function fixNetscape4()
{
if ( ns4origWidth != window.innerWidth || ns4origHeight != window.innerHeight ) {
window.location.reload();
} 
}

if (document.layers)
{
ns4origWidth = window.innerWidth;
ns4origHeight = window.innerHeight;
window.onresize = fixNetscape4;
}

document.addEvent("onmousemove", getMouse);