add lazy load to width , not only height

[researcher48]

on file js.

---

	var winH = document.documentElement.clientHeight || body.clientHeight;
	**var winW = document.documentElement.clientWidth  || body.clientWidth**;

	var updated = false;

	var els = document.getElementsByClassName('lazy-hidden');
	[].forEach.call( els, function( el, index, array ) {

		var elemRect = el.getBoundingClientRect();

		if ( **winW - elemRect.left + BJLL.threshold > 0 &&** winH - elemRect.top + BJLL.threshold > 0 ) {
			BJLL.show( el );
			updated = true;
		}

---