function conversor(precio) {
	    var str = '';
        return overlib(str, CAPTION,""+Xtend(precio,2)+"€ approx conversion" , LEFT, ABOVE, OFFSETY ,10);
}
function Xtend(Q, N) {
  var P;
  Q = String(Q) ; if (/e/i.test(Q)) { return Q;};
  while ((P=Q.indexOf('.'))<0) Q+='.';
  while (Q.length <= P+N) Q+='0';
  if (Q.length-N > P) Q=Q.substring(0,P+N+1);
  return Q;
}