Puedes hacer los cambios al codigo en las primeras variables:
Código:
var timeBeforeAutoHide = 700; // Microseconds to wait before auto hiding menu(1000 = 1 second)
var slideSpeed_out = 10; // Steps to move sub menu at a time ( higher = faster) var slideSpeed_in = 10;20.
var slideTimeout_out = 25; // Microseconds between slide steps ( lower = faster)
var slideTimeout_in = 10; // Microseconds between slide steps ( lower = faster)
var showSubOnMouseOver = true; // false = show sub menu on click, true = show sub menu on mouse over
var fixedSubMenuWidth = false; // Width of sub menu items - A number(width in pixels) or false when width should be dynamic
var xOffsetSubMenu = 0; // Offset x-position of sub menu items - use negative value if you want the sub menu to overlap main menu29.
var slideDirection = 'right'; // Slide to left or right ?
La variable de tu interés es la ultima:
Código HTML:
var slideDirection = 'right'; // Slide to left or right ?