function showtip(current,e,msg) {
elm=document.getElementById("tooltip")
elml=current
elm.innerHTML=msg
elm.style.top=window.event.y+tb().scrollTop;
elm.style.left=window.event.x+10+tb().scrollLeft;
elm.style.visibility = "visible"
}
function hidetip() { elm.style.visibility="hidden" }
function tb(){ return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body }