Radiance quick-add

gistfile1.js

<script>
    $(function() {
		$('.product-grid-item').append('<a href="/cart" style="margin-top:5px;" class="btn quick-add">Add to Cart</a>')
			$('.quick-add').click(function(e){
				e.preventDefault();
				var quick_add_item = this
				if($(quick_add_item).text() == 'View cart') {
					window.location = $(quick_add_item).attr('href')
				} else {
					var quick_add_id = $(this).parent().attr('id').split('product-').join('')        		
					var hostname = document.location.hostname;
					var protocol = document.location.protocol;
					$.ajax({
						type: 'POST',
						url: protocol+'//'+hostname+'/cart/add.js?quantity=1&id='+quick_add_id,
						dataType: 'json',
						success: function(){
							$(quick_add_item).text('View cart')                        
						}
					})
				}			
			})
	});
</script>