var d = document;
var offsetfromcursorY = 15;
var ie=d.all && !window.opera;
var ns6=d.getElementById && !d.all;
var tipobj,op,v = 0;
        
function tooltip(el,txt) 
{
    tipobj=d.getElementById('tooltip');
    tipobj.innerHTML = txt;
    op = 1;    
    tipobj.style.opacity = op;
    el.onmousemove = positiontip; 
    appear();
}

function hide_info(el) 
{
    tipobj.style.visibility = 'hidden';
    el.onmousemove = '';
    v = 0;
}

function ietruebody()
{
    return (d.compatMode && d.compatMode!='BackCompat') ? d.documentElement : d.body;
}

function positiontip(e) 
{
    if(!v) 
    {
        v = 1;
        tipobj.style.visibility = 'visible';
    }
    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);
    }
}