function show_friendList(event)
            {
				var start_locationXY = $('findFriend-container').cumulativeOffset();
				var main_body = $('main_container').cumulativeOffset();
				
                $('friend_search-container').style.left          	= (start_locationXY[0] - main_body[0] ) +'px';
				$('friend_search-container').style.top		        = start_locationXY[1] + 'px';
				
				//cum_locationXY = $('main_container').cumulativeOffset();
				//scroll_locationXY = $('findFriend-container').cumulativeOffset();
				
				//alert('start xy :' + start_locationXY[0] +' : ' + start_locationXY[1] + "\n"+'cum xy :' + cum_locationXY[0] +' : ' + cum_locationXY[1] + "\n"+'scr xy :' + scroll_locationXY[0] +' : ' + scroll_locationXY[1]);
				
               // $(target_element).style.top           = Event.pointerY(event) - 2 + 'px';
                $('friend_search-container').style.display       = 'block';
                
				new Ajax.Updater('friend_search', "/widget_findfriend.php", {method: 'post', parameters: {partial_name: $('friendname').value}});
            }