function enlargePhoto(link_elem)
{
    
    var main_image = document.getElementById('photo_gallery_main_image');
    var title_container = document.getElementById('photo_gallery_title');
    var caption_container = document.getElementById('photo_gallery_caption');
    
    if(main_image && title_container && caption_container){
                
        main_image.src = link_elem.href;
        if (link_elem.title.indexOf(":") > 0)
        {
			main_image.setAttribute("alt", link_elem.title.substring(0, link_elem.title.indexOf(":")));
			caption_container.innerHTML = link_elem.title.substring(link_elem.title.indexOf(":") + 2);
			title_container.innerHTML = link_elem.title.substring(0, link_elem.title.indexOf(":"));
		}
		else
		{
			main_image.setAttribute("alt", link_elem.title);
			caption_container.innerHTML = "";
			title_container.innerHTML = link_elem.title;
		}
        
        return false;
        
    }
    
    return true;
    
}