[рони]

Eadweard,

var col = 3.14;
      alert(col  > 0 ? Math.floor(col) : Math.ceil(col));
      var col = -3.14;
      alert(col  > 0 ? Math.floor(col) : Math.ceil(col));
   var col = 3.14;
      alert(+col.toFixed());
      var col = -3.14;
      alert(+col.toFixed());