gistfile1.js

var Phone = function(input) {
		var $this = this;
		this.input = input;

		this.init = function(options) {
			this.option = this.cloneObj(options);
			this.bild();
		};

		this.bild = function() {
			var val = this.input.val().split(' ');
			var val1 = val[0];
			var val2 = val[1];

			this.input1 = $('<input>').keydown(this.keydown).blur(this.setValue).addClass('span1').val(val1).attr('type', 'text').attr('placeholder', 'код');
			this.input2 = $('<input>').keydown(this.keydown).blur(this.setValue).addClass('span2').val(val2).attr('type', 'text').attr('placeholder', 'номер телефона');

			this.input.hide().after(this.input1, this.input2);
		};

		this.keydown = function(event) {
			if (event.which < 58 || (event.which > 95 && event.which < 106)) {
				return true;
			}
			event.preventDefault();
		};

		this.setValue = function() {
			$this.input.val($this.input1.val()+' '+$this.input2.val());
		};

		this.cloneObj = function(obj) {
			var ret = {};
			for ( var k in obj )
				ret[k] = obj[k];
			return ret;
		};
	};