function mformat(n,zn)
{
	z = "0000000000";
	n = parseFloat(n);
	p = Math.pow(10, zn);
	s = String(Math.round(n*p)/p);
	s = (s.match(/\./)? s+z : s+"."+z).match('\\d+\\.\\d{'+zn+'}');
	return s;
}