///////////////////////////////////////////////////////////////////////
//
// scroll.js: Klasse um Text in einem Layer zu scrollen
//
// Konstruktor:
//
//
//
// Uebergabeparameter: Geschwindigkeit, Scrolleinheit.
//
// Um die Browser zu checken:
//
// Aufruf der Action:
//
// Text runterscrollen:
// moveUp
//
// Text hochscrollen:
// moveDown
//
// Auf einmal springen (hoch/runter):
// ganzHoch
// ganzRunter
//
// Ralf Weber 19.06.2001
////////////////////////////////////////////////////////////////////////////
function scroll(speed,move,fastmove){
this.nn4 = (document.layers) ? true : false;
this.nn6 = ( (document.getElementById) && (!document.all) ) ? true : false;
this.ie = (document.all) ? true : false;
this.speed = speed;
this.move = move;
this.fastmove = fastmove
var timer;
// methoden
this.init = init;
this.destroyTimer = destroyTimer;
this.moveUp = moveUp;
this.moveDown = moveDown;
this.ganzHoch = ganzHoch;
this.ganzRunter = ganzRunter;
this.fastMoveUp = fastMoveUp;
this.fastMoveDown = fastMoveDown;
}
function init(){
if (this.nn4) this.layer = document.layers;
if (this.ie) this.layer = document.all;
}
function destroyTimer() {
if (this.timer) {
clearTimeout(this.timer);
}
}
function moveUp(parentId,childId) {
if(this.ie) {
var windowHoehe = parseInt(this.layer[parentId].style.top);
var contentHoehe = parseInt(this.layer[childId].scrollHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(this.layer[childId].style.top);
if ( (oben + offsetHoehe) > 0 ) {
this.layer[childId].style.top = oben - this.move;
}
}
if(this.nn6) {
var windowHoehe = parseInt(document.getElementById(parentId).style.top);
var contentHoehe = parseInt(document.getElementById(childId).offsetHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(document.getElementById(childId).style.top);
if ( (oben + offsetHoehe) > 0 ) {
document.getElementById(childId).style.top = oben - this.move;
}
}
if(this.nn4) {
var windowHoehe = this.layer[parentId].top;
var contentHoehe = this.layer[parentId].document.layers[childId].document.height;
var offsetHoehe = contentHoehe - windowHoehe;
var oben = this.layer[parentId].document.layers[childId].top;
if ( (oben + offsetHoehe) > 0 ) {
this.layer[parentId].document.layers[childId].top = oben - this.move;
}
}
this.timer = setTimeout("scroll.moveUp('"+parentId+"','"+childId+"')",this.speed);
}
function moveDown(parentId,childId) {
if(this.ie) {
var windowHoehe = parseInt(this.layer[parentId].style.top);
var contentHoehe = parseInt(this.layer[childId].scrollHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(this.layer[childId].style.top);
if ( oben < 0 ) {
this.layer[childId].style.top = oben + this.move;
}
}
if(this.nn6) {
var windowHoehe = parseInt(document.getElementById(parentId).style.top);
var contentHoehe = parseInt(document.getElementById(childId).offsetHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(document.getElementById(childId).style.top);
if ( oben < 0 ) {
document.getElementById(childId).style.top = oben + this.move;
}
}
if(this.nn4) {
var windowHoehe = this.layer[parentId].top;
var contentHoehe = this.layer[parentId].document.layers[childId].document.height;
var offsetHoehe = contentHoehe - windowHoehe;
var oben = this.layer[parentId].document.layers[childId].top;
if ( oben < 0 ) {
this.layer[parentId].document.layers[childId].top = oben + this.move;
}
}
this.timer = setTimeout("scroll.moveDown('"+parentId+"','"+childId+"')",this.speed);
}
// schneller
function fastMoveUp(parentId,childId) {
if(this.ie) {
var windowHoehe = parseInt(this.layer[parentId].style.top);
var contentHoehe = parseInt(this.layer[childId].scrollHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(this.layer[childId].style.top);
if ( (oben + offsetHoehe) > 60 )
{
this.layer[childId].style.top = oben - this.fastmove;
}
}
if(this.nn6) {
var windowHoehe = parseInt(document.getElementById(parentId).style.top);
var contentHoehe = parseInt(document.getElementById(childId).offsetHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(document.getElementById(childId).style.top);
if ( (oben + offsetHoehe) > 60 ) {
document.getElementById(childId).style.top = oben - this.fastmove;
}
}
if(this.nn4) {
var windowHoehe = this.layer[parentId].top;
var contentHoehe = this.layer[parentId].document.layers[childId].document.height;
var offsetHoehe = contentHoehe - windowHoehe;
var oben = this.layer[parentId].document.layers[childId].top;
if ( (oben + offsetHoehe) > 60 ) {
this.layer[parentId].document.layers[childId].top = oben - this.fastmove;
}
}
this.timer = setTimeout("scroll.fastMoveUp('"+parentId+"','"+childId+"')",this.speed);
}
function fastMoveDown(parentId,childId) {
if(this.ie) {
var windowHoehe = parseInt(this.layer[parentId].style.top);
var contentHoehe = parseInt(this.layer[childId].scrollHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(this.layer[childId].style.top);
if ( oben < 0 ) {
this.layer[childId].style.top = oben + this.fastmove;
}
}
if(this.nn6) {
var windowHoehe = parseInt(document.getElementById(parentId).style.top);
var contentHoehe = parseInt(document.getElementById(childId).offsetHeight);
var offsetHoehe = contentHoehe - windowHoehe;
var oben = parseInt(document.getElementById(childId).style.top);
if ( oben < 0 ) {
document.getElementById(childId).style.top = oben + this.fastmove;
}
}
if(this.nn4) {
var windowHoehe = this.layer[parentId].top;
var contentHoehe = this.layer[parentId].document.layers[childId].document.height;
var offsetHoehe = contentHoehe - windowHoehe;
var oben = this.layer[parentId].document.layers[childId].top;
if ( oben < 0 ) {
this.layer[parentId].document.layers[childId].top = oben + this.fastmove;
}
}
this.timer = setTimeout("scroll.fastMoveDown('"+parentId+"','"+childId+"')",this.speed);
}
function ganzHoch(parentId,childId) {
if(this.ie) {
this.layer[childId].style.top = 0;
}
if(this.nn6) {
document.getElementById(childId).style.top = 0;
}
if(this.nn4) {
this.layer[parentId].document.layers[childId].top = 0;
}
}
function ganzRunter(parentId,childId) {
if(this.ie) {
var windowHoehe = parseInt(this.layer[parentId].style.top);
var contentHoehe = parseInt(this.layer[childId].scrollHeight);
var offsetHoehe = contentHoehe - windowHoehe;
this.layer[childId].style.top = -offsetHoehe;
}
if(this.nn6) {
var windowHoehe = parseInt(document.getElementById(parentId).style.top);
var contentHoehe = parseInt(document.getElementById(childId).offsetHeight);
var offsetHoehe = contentHoehe - windowHoehe;
document.getElementById(childId).style.top = -offsetHoehe;
}
if(this.nn4) {
var windowHoehe = this.layer[parentId].top;
var contentHoehe = this.layer[parentId].document.layers[childId].document.height;
var offsetHoehe = contentHoehe - windowHoehe;
this.layer[parentId].document.layers[childId].top = -offsetHoehe;
}
}