Something

var mouseLastX=0, mouseLastY=0;
			var posX=0, posY=0;
			var viewWidth = 540;
			var viewHeight = Element.getHeight('main');
			var start=0;
			function scrollMouse(e){
				var sbox = $('main');
				var thisX = e.pageX;
				var thisY = e.pageY;
				if (mouseLastX>0) {
					dx = thisX - mouseLastX;
					posX = posX-dx;
					if (posX <0) posX =0;
					if (posX > (sbox.scrollWidth - viewWidth)) posX = sbox.scrollWidth - viewWidth;
					sbox.scrollLeft = posX;
				}
				if (mouseLastY>0) {
					dy = thisY - mouseLastY;
					posY = posY-dy;
					if (posY <0) posY =0;
					if (posY > (sbox.scrollHeight - viewHeight)) posY = sbox.scrollHeight - viewHeight;
					sbox.scrollTop = posY;
				};
				mouseLastX = thisX;
				mouseLastY = thisY;
				return false;
			};

			function startScrollMouse (){
				start = 1;
				document.onmousemove= scrollMouse;
				return false;

			};

			function stopScrollMouse(){
				start = 0;
				document.onmousemove = null;
				mouseLastX=0;
				
				mouseLastY=0
				return false;

			};