[exec]

String.prototype.to = function () {
var x = new Date(this.replace(/(\d+)(\w+?)(\d+)/, '$1 $2 $3')).getMonth() + 1,
x = x < 10 ? '0' + x : x;
return this.slice(-4) + x + this.slice(0, 2);
};
alert('01Feb1945'.to());