//
// Function to check that one or checkbox are selected
//

function is_multiple_checked() {
    var formObj = document['tour']['tour[id]'];
    var count = 0;

    for(i=0;i<formObj.length; i++) {
        if(formObj[i].type == 'checkbox') {
            if(formObj[i].checked) {
                count++;
            }
        }
    }

    // alert(count)

    if (count < 1) {
        return false;
    }
    else {
        return true;
    }
}

// Function to call checkbox function (?)
function checkbox_validation(hlaska){
    if (!is_multiple_checked()){
        alert (hlaska);
        return false;
    }
    else {
        return true;
    }
}