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? ietruebody().clientWidth : window.innerWidth-20 
    
var winheight=ie? ietruebody().clientHeight : window.innerHeight-20 
     
 
    
var rightedge=ie? winwidth-event.clientX : winwidth-e.clientX; 
    
var bottomedge=ie? 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); 
    
} 
}