checkbox onchange function does not work as expected in IE and Chrome

I have dynamically generated checkboxes on a page. I use onchange function and it works fine in Firefox:

function setActionDate(cb_id,dt_id){
    //alert(cb_id);
    var cbox = document.getElementById(cb_id);
    var ddate= document.getElementById(dt_id);
    alert(cbox.value);
    if (cbox.value == 'Y') {
            ddate.className = "";
            ddate.style.backgroundColor="#ffe6e6";  
            ddate.placeholder = "Select Date";
    } else if (cbox.value == 'N'){
            ddate.value = "";
            ddate.className = "disabled";
            ddate.style.backgroundColor="";
            ddate.placeholder = "";
    }
}

I read here that IE treats onchange event differently and it is preferably to use onclick function. However I absolutely need to use oncahnge function. Is there a way to resolve it for IE and Chrome?