function creditHistory(){
    ajaxReq = getXmlHttpRequestObject();
    if (ajaxReq.readyState == 4 || ajaxReq.readyState == 0) {
        ajaxReq.open("GET", 'transHistory.do?ex=credit', true);
        ajaxReq.onreadystatechange = handleHistoryReq;
        ajaxReq.send(null);
    }
    return true;
}

function debitHistory(){
    ajaxReq = getXmlHttpRequestObject();
    if (ajaxReq.readyState == 4 || ajaxReq.readyState == 0) {
        ajaxReq.open("GET", 'transHistory.do?ex=debit', true);
        ajaxReq.onreadystatechange = handleHistoryReq;
        ajaxReq.send(null);
    }
    return true;
}


function handleHistoryReq(){
    txt = ajaxReq.responseText;
    var divObj = document.getElementById("transDiv");
    divObj.innerHTML = '';
    divObj.innerHTML = txt;
}