// Extension developed by David G. Miles 
// Original Scrollable Area code developed by Thomas Brattli 



function verifyCompatibleBrowser(){ 
    this.ver=navigator.appVersion 
    this.dom=document.getElementById?1:0 
    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; 
    this.ie4=(document.all && !this.dom)?1:0; 
    this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
    this.ns4=(document.layers && !this.dom)?1:0; 
    this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5) 
    return this 
} 
bw=new verifyCompatibleBrowser() 
 
 
var speed=50;
var loop, timer; 

 
function ConstructObject(obj,nest){ 
    nest=(!nest) ? '':'document.'+nest+'.';
    this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0; 
    this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0; 
    this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight;
    this.clipHeight=bw.ns4?this.css.clip.height:this.el.offsetHeight;
    this.up=MoveAreaUp;this.down=MoveAreaDown; 
    this.MoveArea=MoveArea; this.x; this.y; 
    this.obj = obj + "Object";
    eval(this.obj + "=this");
    return this
} 




/*Scroll Functions*/
function MoveArea(x,y){ 
    this.x=x;this.y=y 
    this.css.left=this.x 
    this.css.top=this.y 
} 
 
function MoveAreaDown(move, id){
	var prop=eval("objContainer"+id+".clipHeight");
	if(this.y>-this.scrollHeight+prop) { 
		this.MoveArea(0,this.y-move) 
    	if(loop) setTimeout(this.obj+".down("+move+","+id+")",speed) 
	} 
} 

function MoveAreaUp(move){ 
	if(this.y<0){ 
    	this.MoveArea(0,this.y-move) 
    	if(loop) setTimeout(this.obj+".up("+move+")",speed) 
	} 
} 



/*Start and Stop Scrolling*/
function PerformScroll(id, speed){ 
	if(initialised){ 
		loop=true; 
		if(speed>0) eval("objScroller"+id+".down(speed, id)"); 
		else eval("objScroller"+id+".up(speed)"); 
	} 
}  
 
function CeaseScroll(){ 
    loop=false 
    if(timer) clearTimeout(timer) 
} 




/*Change Images*/
function ChangeImage(curImage, newImageObj) {
	if (document.images) {
		for(var i = 0; i < window.document.images.length; i++) {
			var strSource=window.document.images[i].src;
			if (strSource.indexOf(curImage) != -1) {
				window.document.images[i].src = newImageObj.src;
			}  
		}
	}
}






var initialised; 
var path = "/fileadmin/template/main/images/";
/*var path = "/images/" */

function InitialiseScrolling (id, container, content) { 
	if (document.getElementById(container)!=null && document.getElementById(content)!=null) {
		eval("objContainer"+id+" = new ConstructObject(container)");
		eval("objContainer"+id+".css.visibility='visible'");
		
		eval("objScroller"+id+" = new ConstructObject(content,container)");
		eval("objScroller"+id+".MoveArea(0,0)");
		
		InitialiseImages();
		initialised=true;
	}
	
}

function InitialiseImages() {
	if (!initialised) {
		up_green_normal = new Image();
		up_green_normal.src = "."+path+"up_green_normal.gif";
		up_green_over = new Image();
		up_green_over.src = "."+path+"up_green_over.gif";
		
		down_green_normal = new Image();
		down_green_normal.src = "."+path+"down_green_normal.gif";
		down_green_over = new Image();
		down_green_over.src = "."+path+"down_green_over.gif";
		
		up_gelb_normal = new Image();
		up_gelb_normal.src = "."+path+"up_gelb_normal.gif";
		up_gelb_over = new Image();
		up_gelb_over.src = "."+path+"up_gelb_over.gif";
		
		down_gelb_normal = new Image();
		down_gelb_normal.src = "."+path+"down_gelb_normal.gif";
		down_gelb_over = new Image();
		down_gelb_over.src = "."+path+"down_gelb_over.gif";
	}
}