<script type="text/javascript" charset="utf-8">

$(document).ready(function(myVar) {

    myVar = <?php echo ($this->Input->post('EUR')); ?>;

    if(typeof myVar != 'undefined') { // value from previous page exists

        var radioValues = [100, 50, 30, 15]; // all possible values

        if(jQuery.inArray(myVar,radioValues) > -1) { // is in array
            path= '#f5 input[value='+myVar+']';
        } else { // is not in array
            path= '#f5 input[value=anderer]';
            $('input[name=AndererBetrag]').val(myVar); // set text field val
        }

        $(path).attr('checked', true); //set checkbox

    }

});

</script>