// JavaScript Document

function calculateTimeout(currElement, nextElement, opts, isForward) { 
    // here we set even number slides to have a 2 second timeout; 
    // by returning false for odd number slides we let those slides 
    // inherit the default timeout value (4 sec) 
    var index = opts.currSlide; 
    return index % 2 ? 4000 : false; 
}