ot_bg_sam

Hello people , i have big problem . It's about a site that next pictures with a few thumnails and a main pictue that is loaded from db with this code : <img src="<?PHP echo $row['path'];?>" alt="<?PHP echo $row['name'];?>" title="<?PHP echo $row['detail'];?>"/> all works fine , but the share button is problem , when I try to share the main picture from the page , and facebook share windows loads all the pictures (thumbnails , ads , arrows ) except the main picture. what I have to add , to make facebook finds my main pic thank you so much. sorry for my not excellent english. cheers.