Scalable images

gistfile1.txt

(function () {
	var yMargin = document.querySelector('.navigation-top').getBoundingClientRect().height + 'px';
	var xMargin = '0px';

	if (window.screen.width < 1150) {
		xMargin = '20px';
	}

	Array.prototype.slice.call(document.querySelectorAll('.blocks-gallery-item img')).forEach(function (image) {
		var ratio = image.offsetWidth / image.offsetHeight;
		var maxWidth = 'calc((calc(100vh - ' + yMargin + ')) * ' + ratio + ' + ' + xMargin + ')';
console.log(maxWidth);
		image.style.maxWidth = maxWidth;
	});
})();