var div;
function onit(bookid) {
div = document.all("div_"+bookid);

div.style.left=window.event.clientX+window.document.body.scrollLeft+6;
div.style.top=window.event.clientY+window.document.body.scrollTop+9;
div.style.visibility="visible";
}

function noit(bookid) {
div = document.all("div_"+bookid);
div.style.visibility="hidden";
}