jQM cancel capturing vertical scroll in scroll view.

jqm.vscroll.js

//Edit _handleDragStart	function.
_handleDragStart: function(e, ex, ey)
	{
		// Stop any scrolling of elements in our parent hierarcy.
		$.each(this._getScrollHierarchy(),function(i,sv){ sv._stopMScroll(); });
		this._stopMScroll();

		var c = this._$clip;
		var v = this._$view;

		if (this.options.delayedClickEnabled) {
			this._$clickEle = $(e.target).closest(this.options.delayedClickSelector);
		}

    this._lastX = this._lastX ? this._lastX : 0;
    this._lastY = this._lastY ? this._lastY : 0;

    var dx = 0; 
    var dy = 0; 

    //　縦方向のスクロールをキャンセルのために移動距離を算出
    dx = Math.abs(this._lastX - ex);
    dy = Math.abs(this._lastY - ey);

		this._lastX = ex;
		this._lastY = ey;
		this._doSnapBackX = false;
		this._doSnapBackY = false;
		this._speedX = 0;
		this._speedY = 0;
		this._directionLock = "";
		this._didDrag = false;

    //　縦方向のスクロールをキャンセル 
    if (dy > 20 || (dx < 2 && dx < dy) ) {
        console.log(dx);
        console.log(dy);
        return true; 
    }


    ・・・・


);