function getPosition(elm){var x=0;var y=0;while(elm!=null){x+=elm.offsetLeft;y+=elm.offsetTop;elm=elm.offsetParent;}
return{'x':x,'y':y};}
function getSize(elm){return{'width':elm.offsetWidth,'height':elm.offsetHeight};}
function helpbox_show(id,link){var elm=document.getElementById(id);if(elm){elm.style.display='block';if(!elm.positioned){elm.positioned=true;var linkPosition=getPosition(link);var linkSize=getSize(link);var boxSize=getSize(elm);elm.style.left=(linkPosition.x-boxSize.width)+"px";elm.style.top=(linkPosition.y+linkSize.height)+"px";}}}
function helpbox_hide(id){var elm=document.getElementById(id);if(elm){elm.style.display='none';}}