gk=window.Event?1:0; // navigateurs Gecko ou IE
D=document;
popup=encours=x=0;

function ctrl(e)
{
if(!x){
	de=!D.documentElement.clientWidth?D.body:D.documentElement;
	x=1
} // IE6

sx=gk?pageXOffset:de.scrollLeft //scroll h
sy=gk?pageYOffset:de.scrollTop //scroll v
x=gk?e.pageX:event.clientX+sx; //curseur x
y=gk?e.pageY:event.clientY+sy; //curseur y

}

D.onmousemove=ctrl


function show(id_div){
popup = D.getElementById(id_div).style; 
encours.display='none';
encours=popup;
with(popup){display="block";left=x+'px';top=y+20+'px';}
}

function hide(id_div){
popup = D.getElementById(id_div).style; 
encours.display='block';
encours=popup;
with(popup){display="none";}
}