var image_type='700w-';

var reset_height;

function enlargeImage(){
	var img = document.getElementById('image_1');
	var re = /^(.*\/)(.*)-(.*)$/;
	var I = re.exec(img.src);
var image_larger_src = I[1] + image_type + I[3];

	var i_larger='<div onclick="closeEnlargedImage()" class="enlarged_image">';
	i_larger += '<img src="'+image_larger_src+'">';
	i_larger += '<img src="/images/close.jpg" onclick="closeEnlargedImage()">';
	i_larger += '</div>';

	var i_container = document.getElementById('image_block');

	i_container.innerHTML = i_larger;
	i_container.style.display = 'block';

	document.getElementById('side_nav').style.display = 'none';
	reset_height = document.getElementById('content').offsetHeight;
	document.getElementById('content').style.display = 'none';

}

function closeEnlargedImage(){
	var i_container = document.getElementById('image_block');

	i_container.innerHTML = '';
	i_container.style.display = 'none';

	document.getElementById('side_nav').style.display = 'block';

	document.getElementById('content').style.display = 'block';

document.getElementById('content').height = reset_height + 'px';
}