function build_portfolio() {
	var data_arr = new Array(
	{id:'27',thumb_image:'/filebin/images/portfolio/commercial/400_s_main/thumbnails/IMG_2847.jpg',large_image:'/filebin/images/portfolio/commercial/400_s_main/IMG_2847.jpg',height:'207'},
{id:'73',thumb_image:'/filebin/images/portfolio/commercial/400_s_main/thumbnails/IMG_2818.jpg',large_image:'/filebin/images/portfolio/commercial/400_s_main/IMG_2818.jpg',height:'465'},
{id:'74',thumb_image:'/filebin/images/portfolio/commercial/400_s_main/thumbnails/IMG_2754.jpg',large_image:'/filebin/images/portfolio/commercial/400_s_main/IMG_2754.jpg',height:'465'},
{id:'75',thumb_image:'/filebin/images/portfolio/commercial/400_s_main/thumbnails/IMG_2842.jpg',large_image:'/filebin/images/portfolio/commercial/400_s_main/IMG_2842.jpg',height:'229'}							 );
	var hold_full = $('hold_full');
	var hold_thumbnails = $('hold_thumbnails'); 
	var default_img=$E({
		tag:'img',
		src:data_arr[0].large_image,
		id:'port_img'
	});
	default_img.default_height = data_arr[0].height;
	default_img.change_amt = 44;
	hold_full.appendChild(default_img);    
	 if (data_arr.length >1) {  
		data_arr.each(function(child) {
			var thumb=$E({
				tag:'li',
				children:{
					tag:'img',
					src:child.thumb_image
				}
			});
			hold_thumbnails.appendChild(thumb);
			thumb.props = child;
			Event.observe(thumb, 'click', function() {  
				var old_height = $('port_img').default_height;
				hold_full.innerHTML='';
				var new_img=$E({
					tag:'img',
					src:thumb.props.large_image,
					id:'port_img'
				});
				new_img.default_height = thumb.props.height;
				hold_full.appendChild(new_img);
				var change_amount = new_img.default_height - old_height;
				new_img.change_amt = change_amount;
				resize_header();
				move_content();
				resize_color_box();
				move_markings();
				resize_bg();
			});
		});
	}
}