function lib_bwcheck(){ //Browsercheck
	this.ver=navigator.appVersion;
	this.agent=navigator.userAgent;
	this.dom=document.getElementById?1:0;
	this.opera5=this.agent.indexOf("Opera 5")>-1;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; 
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6;
	this.mac=this.agent.indexOf("Mac")>-1;
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5);
	return this;
}
var bw=new lib_bwcheck();

function makeObj(obj,nest){ //Ebenenobjekt
	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.img =bw.ns4?this.el.document.images:document.images;
	this.height=bw.ns4?this.css.document.height:this.el.offsetHeight;
	this.width=bw.ns4?this.css.document.width:this.el.offsetWidth;
	this.x = bw.ns4? parseInt(this.css.left):this.el.offsetLeft;
	this.y = bw.ns4? parseInt(this.css.top):this.el.offsetTop;
	this.top=b_gettop;	
	this.left=b_getleft;
	this.zeige = Obj_ein;
  	this.verstecke = Obj_aus;
	this.schreiben =Obj_schreiben;
  	this.gehnach = Obj_gehnach;
	return this;
}
var px = bw.ns4||window.opera?"":"px";
//Methoden Ebenenobjekt
function b_gettop(){
	var gtop=(bw.ns4 || bw.ns6)?parseInt(this.css.top):eval(this.css.pixelTop);
	return gtop;
}
function b_getleft(){
	var gleft=(bw.ns4 || bw.ns6)?parseInt(this.css.left):eval(this.css.pixelLeft);
	return gleft;
}
function Obj_ein() { this.css.visibility = "visible";}
function Obj_aus() {this.css.visibility = "hidden";}

function Obj_schreiben(txt) {
	if (document.layers) {
		this.el.document.open();
		this.el.document.write(txt);
		this.el.document.close();
	} else {
		this.el.innerHTML = "";
		this.el.innerHTML = txt;
	}
}
function Obj_gehnach(x,y) {
	this.css.left = x+px;	this.x = x+px;
	this.css.top = y+px;	this.y = y+px;
}
//Methoden Ebenenobjekt	Ende