function pw() 

{

return window.innerWidth || 
document.documentElement.clientWidth || 
document.body.clientWidth}; 

function mouseX(evt) {
return evt.clientX ? 
evt.clientX + (document.documentElement.scrollLeft || 
document.body.scrollLeft) : evt.pageX;} 

function mouseY(evt) {return evt.clientY ? 
evt.clientY + (document.documentElement.scrollTop || 
document.body.scrollTop) : evt.pageY} 

function popUp(evt,oi) {

if (document.getElementById) {

var wp = pw(); 
dm = document.getElementById(oi); 

ds = dm.style; 
st = ds.visibility; if (dm.offsetWidth) 

ew = dm.offsetWidth; else if (dm.clip.width) 

ew = dm.clip.width; 
if (st == "visible" || st == "show") { 

ds.visibility = "hidden"; } 


else {tv = mouseY(evt) + 20; lv = mouseX(evt) - (ew/4); 


if (lv < 2) lv = 2; 
else if (lv + ew > wp) lv -= ew/2; 



lv += 'px';
tv += 'px';  

ds.left = lv; 
ds.top = tv; 
ds.visibility = "visible";

}
}
}