// Marquee - Javascript - Modul
// Adaptiert für die Homepage des Gewerbeverbandes Finsing
// 15.05.01, eich

var boxheight=30;      //Background "box" height in pixels.
var boxwidth=450;       //Background "box" width in pixels.
var boxleftpos=240;      //Background "box" position, in pixels, from the left edge of the browser window.
var boxtoppos=17       //Background "box" position, in pixels, from the top edge of the browser window.
var elementwidth=200;   //Width of the scrolling element in pixels.
if (isNaN(elementheight) == true) 
	{var elementheight=100; }  //Height of the scrolling element in pixels if not already defined in news.js.
var repeat=true;        //true=repeats over and over - false=one time.
var seebox=true;        //true=background box is visible - false=background box is hidden.
var speed=400;           //Delay between animations of scrolling effect in milliseconds (1000 milliseconds=1 second).
var pixelstep=5;        //amount of pixel "step" per repetition.
var scrolltype=4;       //1=bounce  2=roll left  3=roll right  4=roll up  5=roll down
var scrl, bckgnd, id;
var isNS=(navigator.appName=="Netscape");
var _visible='show';
var _hidden='hide';
var _all='';
var _style='';
if(!isNS){
_all='all.';
_style='.style';
_visible='visible';
_hidden='hidden';
}


function init(){
clearTimeout(id);
scrl=eval('document.'+_all+'scrl'+_style);
bckgnd=eval('document.'+_all+'bckgnd'+_style);

if(isNS){
bckgnd.moveTo(boxleftpos-6,boxtoppos-6);
}else{
bckgnd.pixelLeft=boxleftpos-6;
bckgnd.pixelTop=boxtoppos-6;
}
if(seebox)bckgnd.visibility=_visible;
switch(scrolltype){
case 1: setinitpos(boxleftpos,boxtoppos);
bouncescroll(true);
break;
case 2: setinitpos(boxleftpos+boxwidth,boxtoppos);
leftscroll(-boxwidth);
break;
case 3: setinitpos(boxleftpos-elementwidth,boxtoppos);
rightscroll(0);
break;
case 4: setinitpos(boxleftpos,boxtoppos+boxheight);
upscroll(-boxheight);
break;
case 5: setinitpos(boxleftpos,boxtoppos-elementheight);
downscroll(elementheight);
break;
default: alert('Invalid scroll option!');
break;
}}


function leftscroll(pxloffset){
pxloffset+=pixelstep;
if(isNS){
scrl.clip.top=0;
scrl.clip.right=boxwidth+pxloffset;
scrl.clip.bottom=boxheight;
scrl.clip.left=pxloffset;
scrl.moveBy(-pixelstep,0);
}else{
scrl.clip="rect(0px "+(boxwidth+pxloffset)+"px "+boxheight+"px "+pxloffset+"px)";
scrl.pixelLeft-=pixelstep;
}
if(repeat&&(pxloffset>elementwidth)){
setinitpos(boxleftpos+boxwidth,boxtoppos);
pxloffset=(-boxwidth);
}
id=setTimeout('leftscroll('+pxloffset+')', speed);
}


function rightscroll(pxloffset){
pxloffset-=pixelstep;
if(isNS){
scrl.clip.top=0;
scrl.clip.right=boxwidth+pxloffset;
scrl.clip.bottom=boxheight;
scrl.clip.left=pxloffset;
scrl.moveTo(boxleftpos-pxloffset,scrl.top);
}else{
scrl.clip="rect(0px "+(boxwidth+pxloffset)+"px "+boxheight+"px "+pxloffset+"px)";
scrl.pixelLeft=boxleftpos-pxloffset;
}
if(repeat&&(pxloffset<-boxwidth)){
pxloffset=elementwidth;
setinitpos(boxleftpos-elementwidth,boxtoppos);
}
id=setTimeout('rightscroll('+pxloffset+')', speed);
}


function bouncescroll(goingright){
if(isNS){
scrl.clip.right=elementwidth;
scrl.clip.left=0;
scrl.clip.bottom=elementheight;
scrl.clip.left=0;
if(scrl.left>=(boxwidth-elementwidth+boxleftpos))goingright=false;
if(scrl.left<=boxleftpos)goingright=true;
(goingright)?scrl.moveTo(scrl.left+pixelstep,scrl.top):scrl.moveTo(scrl.left-pixelstep,scrl.top);
}else{
scrl.clip="rect("+0+"px "+elementwidth+"px "+elementheight+"px 0px)";
if(scrl.pixelLeft>=(boxwidth-elementwidth+boxleftpos))goingright=false;
if(scrl.pixelLeft<=boxleftpos)goingright=true;
(goingright)?scrl.pixelLeft+=pixelstep:scrl.pixelLeft-=pixelstep;
}
id=setTimeout('bouncescroll('+goingright+')',speed);
}


function downscroll(pxloffset){
pxloffset-=pixelstep;
if(isNS){
scrl.clip.top=pxloffset;
scrl.clip.right=boxwidth;
scrl.clip.bottom=boxheight+pxloffset;
scrl.clip.left=0;
scrl.moveTo(boxleftpos,boxtoppos-pxloffset);
}else{
scrl.clip="rect("+pxloffset+"px "+boxwidth+"px "+(boxheight+pxloffset)+"px 0px)";
scrl.pixelTop=boxtoppos-pxloffset;
}
if(repeat&&(pxloffset<-boxheight)){
setinitpos(boxleftpos,boxtoppos-elementheight);
pxloffset=elementheight;}
id=setTimeout('downscroll('+pxloffset+')', speed);
}


function upscroll(pxloffset){
pxloffset+=pixelstep;
if(isNS){
scrl.clip.top=pxloffset;
scrl.clip.right=boxwidth;
scrl.clip.bottom=boxheight+pxloffset;
scrl.clip.left=0;
scrl.moveBy(0,-pixelstep);
}else{
scrl.clip="rect("+(pxloffset)+"px "+boxwidth+"px "+(pxloffset+boxheight)+"px 0px)";
scrl.pixelTop-=pixelstep;
}
if(repeat&&(pxloffset>elementheight)){
setinitpos(boxleftpos,boxtoppos+boxheight);
pxloffset=-boxheight;
}
id=setTimeout('upscroll('+pxloffset+')', speed);
}


function setinitpos(x,y){
if(isNS){
scrl.clip.top=0;
scrl.clip.right=0;
scrl.clip.bottom=0;
scrl.clip.left=0;
scrl.moveTo(x,y);
}else{
scrl.clip="rect(0px 0px 0px 0px)";
scrl.pixelTop=y;
scrl.pixelLeft=x;
}
scrl.visibility=_visible;
}