var _last_s=_T=0;_B.onscroll=_B.onresize=fl_scroll;window.onscroll=fl_scroll;window.onresize=fl_scroll;attach_event("load",fl_scroll,_B);attach_event("load",fl_scroll);add_handler_onchange(fl_scroll);function fl_scroll(){var s=$("fly").style;if(_T)clearTimeout(_T);else{s.position="relative";s.zIndex=5}s.top=0;_T=setTimeout("set_fly()",50)}function set_fly(){var fly=$("fly"),h=$h(fly)?$h(fly)-1:23,m=get_XY(fly),s=_B.clientHeight+_B.scrollTop-h-m.y;s=fly.style.top=s<0?s:0;m.y+=s;if(_last_s!=s){show_hide_elm2("SELECT",1,m.x,m.y,$w(fly),h);show_hide_elm2("SELECT",0,m.x,m.y,$w(fly),h);_last_s=s}}