var navImgPath = 'fileadmin/templates/img/nav/';
    var permID = '';
    
    function change_img (id, state) {
    	if ( state == 'lo' && id == permID )
    		return;
    	
    	textKey = id + '-text';
    	textImageFile = navImgPath + id + '-nav-text-' + state + '.gif'
    	document.getElementById(textKey).src = textImageFile;
    	
    	imageKey = id + '-img';
    	imgImageFile = navImgPath + id + '-nav-blume-' + state + '.jpg'
    	document.getElementById(imageKey).src = imgImageFile;
    }

    function change_img_perm (id) {
    	textKey = id + '-text';
    	textImageFile = navImgPath + id + '-nav-text-hi.gif'
    	document.getElementById(textKey).src = textImageFile;
    	
    	imageKey = id + '-img';
    	imgImageFile = navImgPath + id + '-nav-blume-hi.jpg'
    	document.getElementById(imageKey).src = imgImageFile;
    	
    	permID = id;
    }