[abrahamm]

рони,

<script type="text/javascript">

var img = document.createElement('img'),
	quantity = parseInt(document.getElementById('quantity').innerHTML);
	img.className = 'img';

plusFive.onclick = function() {
	quantity = quantity + 5;

        for (var i = 0; i < quantity; i++) {
	        document.getElementById('section').appendChild(img);
	}
	document.getElementById('quantity').innerHTML = quantity;
}

minusFive.onclick = function() {
	quantity = quantity - 5;

	document.getElementById('quantity').innerHTML = quantity;
}

</script>