var u = 0;
var d = 0;
 		
 		function up(){
 			var top = jQuery("#scroll").css("top");
 			
 			top = top.substring(0, top.length-2)
 			var  x = (Number(top) + 2);

 			if(x>0){
 				x = 0;
 				u = 0;
 			}

 			jQuery("#scroll").css("top", x);
 			
 			if(u == 1){
 				t=setTimeout("up()", 2);
 			}
 			else{
 				u = 0;
 			}
 		};
 		
 		function down(){
    		var top = jQuery("#scroll").css("top");
 			var height = jQuery("#scroll").height();
 			var panel = jQuery("#panel").height();
 			var paneltop = jQuery("#panel").css("top");
 			
 			top = top.substring(0, top.length-2);
 			
 			var  x = (Number(top) - 2);
 			
 		
    			height = height;
    			panel = panel;
    			paneltop = top.substring(0, paneltop.length-2);

 				if(x > 0 - height + Number(panel) - 10 && d == 1){
 					jQuery("#scroll").css("top", x);
 					t=setTimeout("down()",2);
 				}
 			
 		};