var status = "out";			
			function mouse_over() {
				status = "over"
			}
			function mouse_out() {
				status = "out"
			}
			function scroll_div(direction, speed) {
				var obj = document.getElementById('scroll');
				switch(direction) {
					case "up":
						obj.scrollTop += speed;
						if(status == "over") {
							setTimeout("scroll_div('up',"+speed+");", 1);
						}
					break;
					
					case "down":
						obj.scrollTop -= speed;
						if(status == "over") {
							setTimeout("scroll_div('down',"+speed+");", 1);
						}
					break;
				}
			}