Modification on iScroll

gistfile1.js

/* 1. Add preventThreshold in default options and disable preventDefault, about 65L */
that.options = {
    /* ... */
    preventThreshold: 3, 
    /* ... */
    onBeforeScrollStart: function (e) { /*e.preventDefault();*/ },
    /* ... */
};


/* 2.Add threshold check code in _move function, about 380L */
if ( (that.options.hScroll && Math.abs(deltaX) >= that.options.preventThreshold ) 
  || (that.options.vScroll && Math.abs(deltaY) >= that.options.preventThreshold ) )
    e.preventDefault();