function popupImpressum(){		
	var win = window.open('popup_impressum.html','objImage','left='+((screen.width/2)-154)+',top='+((screen.height/2)-200)+',width=317,height=400');
	win.focus();
}

function popupDisclaimer(){		
	var win = window.open('popup_disclaimer.html','objImage','left='+((screen.width/2)-154)+',top='+((screen.height/2)-200)+',width=350,height=420,scrollbars=1');
	win.focus();
}


function initRollover(_name)
{	
	var _doc = document;	
	
	if(_name != "" && document.getElementById(_name).document) {	
		_doc = document.getElementById(_name).document;
	}
	
	
	
    for(i=0;i<_doc.images.length;i++){
    	if(_doc.images[i].src.indexOf('nav_') != -1 || _doc.images[i].src.indexOf('but_') != -1){    		 
				var parentNode = document.images[i].parentNode;
				
				parentNode.onmouseover = imgButtonHi;
				parentNode.onmouseout = imgButtonLo;
				parentNode.onclick = imgButtonClick;
				parentNode.lock = imgButtonLock;
				parentNode.unlock = imgButtonUnlock;
	
							
				parentNode.imgLo = new Image();
				parentNode.imgHi = new Image();
				
				parentNode.imgLo = document.images[i].src;
				parentNode.imgHi = document.images[i].src.replace('_lo.','_hi.');	         
							
				parentNode.img = document.images[i];			
				parentNode.img.blnLocked = false;
				parentNode.img.a = parentNode;
			}
    }        
    
    function imgButtonHi(){
        this.img.src = this.imgHi;
    }
    function imgButtonLo(){
        if(!this.img.blnLocked) this.img.src = this.imgLo;
    }
	function imgButtonLock(){
		this.img.blnLocked = true;
        this.img.src = this.imgHi;
    }
	function imgButtonUnlock(){		
        this.img.src = this.imgLo;
		this.img.blnLocked = false;
    }
	function imgButtonClick(){		
        nav(this);
    }
	
}


var _nav = null;
function nav(_obj){
	if(_nav != null) _nav.unlock();
	if(_obj) _obj.lock();

	_nav = _obj;		
}