var opai=0;


function open_info() {
if (opai == 0) 
	{
	show_info(); 
	}
else 
	{
	close_info(); 
	}
}



function show_info() {


opai += 5;

set_opacity('calque_info',opai);

if (opai > 100) 
	{
	set_opacity('calque_info',100);
	return false;
	}
timer = setTimeout('show_info()', 10);
}
function close_info() {


opai -= 5;

set_opacity('calque_info',opai);

if (opai < 0) 
	{
	opai = 0;
	set_opacity('calque_info',0);
	return false;
	}
timer = setTimeout('close_info()', 10);
}