SCROLLREF = function(obj, attr) {
                                    	var interval;
                                    	var offset = {
                                    	'top': obj.offsetTop || 0,
                                    	'height': obj.offsetHeight || 0
                                    };
                                    this.start = function(amount) {
                                    /* Default setzen */
                                    	attr.top = attr.top || 0;
                                    	attr.width = attr.width || "auto";
                                    /* Intervall starten */
                                    interval = setInterval(
                                    	function() {
                                    	move(amount);
                                    	},
                                    	attr.time
                                    	);
                                    };
                                    
                                    this.stop = function() {
                                    	if (interval) {
                                    	clearInterval(interval);
                                    	}
                                    }
                                    
                                    function move(amount) {
                                    /* Werte refreshen */
                                    	attr.top += amount;
                                    	attr.height += amount;
                                    	offset.top -= amount;
                                    
                                    /* Grenze überschritten? */
                                    if (attr.top < 0 || attr.height > offset.height) {
                                    	attr.top -= amount;
                                    	attr.height -= amount;
                                    	offset.top += amount;
                                    	return;
                                    }
                                    
                                    /* Object bewegen */
                                    	obj.style.clip = "rect(" + attr.top + "px " + attr.width + "px " + attr.height + "px 0)";
                                    	obj.style.top = offset.top + "px";
                                    	}
                                    }
                                    
                                   
                                          var scrollref = new SCROLLREF(
                                                                  document.getElementById('tbpartner'),
                                                                  {
                                                                   'time':   60,
                                                                  	'width':  370,
                                                                  	'height': 275
                                                                  }
                                                                 );