drag.js

        $("#" + baseId)
            .mousedown(function() {
                isDragging = false;
            })
            .mousemove(function() {
                var wasDragging = isDragging;
                isDragging = true;
                if (wasDragging)
                    editor.resize();
            })
            .mouseup(function() {
                var wasDragging = isDragging;
                isDragging = false;
                if (!wasDragging) {
                    editor.resize();
                }
            });