function addLightBox()
{
	var post_links = document.getElementById('content').getElementsByTagName('a');
	
	for ( i = 0; i < post_links.length; i++ )
	{
		var link = post_links[i];
		if ( link.getElementsByTagName('img').length )
		{
			link.rel = "lightbox";
		}
	}
}

window.addEvent('domready', addLightBox);