var t;
			var doLoop = true;

			function scrollDown(divid, scroll_speed){
				var div = document.getElementById(divid);

				if (div.scrollTop<999999999 && doLoop){
					div.scrollTop+=1; 
					//div.scrollTop=div.scrollTop + parseInt(scroll_speed);
					t = setTimeout("scrollDown('" + divid + "')", 1);
				}
				else clearTimeout(t);				
			}
			
			function scrollUp(divid,speed){
				var div = document.getElementById(divid);

				if (div.scrollTop>0 && doLoop){
					div.scrollTop-=1; 
					//div.scrollTop=div.scrollTop-parseInt(scroll_speed);
					t = setTimeout("scrollUp('" + divid + "')", 1);
				}
				else clearTimeout(t);				
			}			
			
			function stop(){
				doLoop = false;
				setTimeout('doLoop = true;', 5);
			}