Circular scrolling for Synchronet's frame.js

gistfile1.txt

	this.scrollCircular = function(x,y) {
		var update = false;

		if (typeof y == "number" && y > 0 && settings.v_scroll) {
			for (var i=0; i<y; i++) {
				var rowToMove = properties.data.shift();
				properties.data.push(rowToMove);
				update = true;
			}
		}
		else if (typeof y == "number" && y < 0 && settings.v_scroll) {
			for (var i=0; i<Math.abs(y); i++) {
				var rowToMove = properties.data.pop();
				properties.data.unshift(rowToMove);
				update = true;
			}
		}
		else if (typeof x == "number" && x > 0 && settings.h_scroll) {
			for (var i=0; i<x; i++) {
				for ( yl = 0; yl < properties.data.length; yl++) {
					var cellToMove = properties.data[yl].shift();
					properties.data[yl].push(cellToMove);
				}
				update = true;
			}
		}
		else if (typeof x == "number" && x < 0 && settings.h_scroll) {
			for (var i=0; i<Math.abs(x); i++) {
				for ( yl = 0; yl < properties.data.length; yl++) {
					var cellToMove = properties.data[yl].pop();
					properties.data[yl].unshift(cellToMove);
				}
				update = true;
			}
		}
		if (update) {
			this.refresh();
		}
		return update;
	}