function getcheckedEmailIDs(){
    var emailIDs = new Array();
    var inputs = document.getElementById("messages-table").getElementsByTagName("input");
    for(var i = 0; i < inputs.length; i++){
        var cb = inputs[i];
        if(cb.type == "checkbox" && cb.checked){
            emailIDs.push(cb[i].value);
        }
    }
    return emailIDs;
}