initImages(["pf1", "images/nav_pf.gif"],
			["pf2", "images/nav_pf_on.gif"],
			["vita1", "images/nav_vita.gif"],
			["vita2", "images/nav_vita_on.gif"],
			["contact1", "images/nav_contact.gif"],
			["contact2", "images/nav_contact_on.gif"],
			["imprint1", "images/nav_imprint.gif"],
			["imprint2", "images/nav_imprint_on.gif"],
			["paintings1", "images/nav_paintings.gif"],
			["paintings2", "images/nav_paintings_on.gif"],
			["zweivier1", "images/nav_2004.gif"],
			["zweivier2", "images/nav_2004_on.gif"],
			["zweifuenf1", "images/nav_2005.gif"],
			["zweifuenf2", "images/nav_2005_on.gif"],
			["zweitausend1", "images/nav_2000.gif"],
			["zweitausend2", "images/nav_2000_on.gif"],
			["siebenundneunzig1", "images/nav_1997.gif"],
			["siebenundneunzig2", "images/nav_1997_on.gif"],
			["sculptures1", "images/nav_sculpture.gif"],
			["sculptures2", "images/nav_sculpture_on.gif"]);

//Lib objects  ********************
function lib_obj(obj,nest){
  if(!bw.bw) return lib_message('Old browser')
  nest=(!nest) ? "":'document.'+nest+'.';
  this.evnt=bw.dom? document.getElementById(obj):
    bw.ie4?document.all[obj]:bw.ns4?eval(nest+"document.layers[obj]"):0;	
  /*if(!this.evnt) return lib_message('The layer does not exist ('+obj+')' 
    +'- \nIf your using Netscape please check the nesting of your tags!')*/
   if(!this.evnt) return -1;

  this.css=bw.dom||bw.ie4?this.evnt.style:this.evnt; 
  this.ref=bw.dom||bw.ie4?document:this.css.document;
  this.x=parseInt(this.css.left)||this.css.pixelLeft||this.evnt.offsetLeft||0;
  this.y=parseInt(this.css.top)||this.css.pixelTop||this.evnt.offsetTop||0;
  this.w=this.evnt.offsetWidth||this.css.clip.width||
    this.ref.width||this.css.pixelWidth||0;
  this.h=this.evnt.offsetHeight||this.css.clip.height||
    this.ref.height||this.css.pixelHeight||0;
  this.c=0; //Clip values
  if((bw.dom || bw.ie4) && this.css.clip) {
  this.c=this.css.clip; this.c=this.c.slice(5,this.c.length-1); 
  this.c=this.c.split(' ');
  for(var i=0;i<4;i++){this.c[i]=parseInt(this.c[i])}
  }
  this.ct=this.css.clip.top||this.c[0]||0; 
  this.cr=this.css.clip.right||this.c[1]||this.w||0;
  this.cb=this.css.clip.bottom||this.c[2]||this.h||0; 
  this.cl=this.css.clip.left||this.c[3]||0;
  this.obj = obj + "Object"; eval(this.obj + "=this");
  return this;
}

//Showing object ************
lib_obj.prototype.showIt = function(){
	this.css.visibility="visible"
}

//Hiding object **********
lib_obj.prototype.hideIt = function(){
	this.css.visibility="hidden"
	}


//Moving object to **************
lib_obj.prototype.moveIt = function(x,y){
  this.x=x;this.y=y; this.css.left=x;this.css.top=y
}

//Moving object by a specified number of pixels **************
lib_obj.prototype.moveBy = function(x,y){
  this.moveIt(this.x+x,this.y+y);
}

//preload
function initImages()
{
	args_images_II = initImages.arguments;

	for (var i = 0; i < args_images_II.length; i++)
	{
		eval (args_images_II[i][0] + '= new Image();')
		eval (args_images_II[i][0] + '.src = "' + args_images_II[i][1] + '";');
	}
}

function showImages()
{
	args_images_SI = showImages.arguments;
	
	if (bw.ns4 && args_images_SI[2])
		eval('document.' + args_images_SI[2] + '.document.images["' + args_images_SI[0] + '"].src = ' + args_images_SI[1] + '.src;');
	else
	eval ('document.images["' + args_images_SI[0] + '"].src = ' + args_images_SI[1] + '.src;');
}