There are other big libraries which also provide resizable and draggable functions. For example, Sencha’s ExtJS has a resizer function and YUI comes with its own Resize Utility. Resizable from RightJS is another option but these solutions will probably only make sense if you are already using these large libraries.
Drag Resize jQuery Plugin
Simple Resizable Div on jsFiddle
Resizing, Moving, and Snapping with JS and CSS
Drag Resizable with JS