$(document).ready(function () {
    $('.radio_input').click(
    	function () {
		var clickedRadio = this;
                var beforeClickedRadio = true;

                var radios = $('.radio_input');
                var i_clicked = -1;

                for (i = 0; i < radios.length; ++i) {
		    var radio = radios[i];

       			if (!beforeClickedRadio && clickedRadio.value === '2' && radio.value === '2') {
   			    radio.checked = true;
			}

			if (beforeClickedRadio && clickedRadio.value === '1' && radio.value === '1') {
   			    radio.checked = true;
			}

			if (!beforeClickedRadio && clickedRadio.value === '1' && radio.value === '1' && radio === clickedRadio) {
			   radio.checked = true;
			}

			if (!beforeClickedRadio && clickedRadio.value === '1' && radio.value === '2' && i_clicked != (i-1)) {
			   radio.checked = true;
			}

			if (beforeClickedRadio && clickedRadio.value === '2' && radio.value === '1') {
			   radio.checked = true;
			}

			if (radio === clickedRadio) {
			   beforeClickedRadio = false;
			   radio.checked = true;
			   i_clicked = i;
			   continue;
		}
	   }
	}
    );
});