jQuery UI Resizable - Default functionality
#resizable { width: 150px; height: 150px; padding: 0.5em; }
#resizable h3 { text-align: center; margin: 0; }
$(function() {
$("#resizable").resizable();
});
Resizable
Enable any DOM element to be resizable. With the cursor grab the right or bottom border and drag to the desired width or height.