function confirm_delete()
{
    var aa = confirm("Are you sure to delete ?");
    if(aa == true)
        return true;
    else
        return false;
}

function numbersonly(evt) 
{
    evt = (evt) ? evt : window.event
    var charCode = (evt.which) ? evt.which : evt.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57)) 
    {
        status = "This field accepts numbers only."
        return false;
    }
    status = ""
    return true;
}