var d = document; 
var offsetfromcursorY=15 // y offset of tooltip 
var ie=d.all && !window.opera; 
var ns6=d.getElementById && !d.all; 
var tipobj,op; 
 
//////////////////////////////////////////////////////////////////////////////////// 
         
function tooltip(el,txt) 
{ 
    tipobj=d.getElementById('mess'); 
    tipobj.innerHTML = txt; 
    op = 0.1;    
    tipobj.style.opacity = op;  
    tipobj.style.visibility="visible"; 
    el.onmousemove=positiontip; 
    appear(); 
} 
 
function hide_info(el) 
{ 
    d.getElementById('mess').style.visibility='hidden'; 
    el.onmousemove=''; 
} 
 
function ietruebody(){ 
return (d.compatMode && d.compatMode!="BackCompat")? d.documentElement : d.body 
} 
 
function positiontip(e) 
{ 
    var curX=(ns6)?e.pageX : event.clientX+ietruebody().scrollLeft; 
    var curY=(ns6)?e.pageY : event.clientY+ietruebody().scrollTop; 
    var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20 
    var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20 
     
    var rightedge=ie&&!window.opera? winwidth-event.clientX : winwidth-e.clientX; 
    var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY; 
 
    if (rightedge<tipobj.offsetWidth)   tipobj.style.left=curX-tipobj.offsetWidth+"px"; 
    else tipobj.style.left=curX+"px"; 
 
    if (bottomedge<tipobj.offsetHeight) tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px" 
    else tipobj.style.top=curY+offsetfromcursorY+"px"; 
} 
 
function appear()   
{    
    if(op < 1)  
    { 
        op += 0.1; 
        tipobj.style.opacity = op; 
        tipobj.style.filter = 'alpha(opacity='+op*100+')'; 
        t = setTimeout('appear()', 30); 
    } 
}