//var xmlHttp;
//var str_form = "";
function couponCheck(){
    var frm = document.getElementById("coupons");
    var elem = frm.elements;
    var len = elem.length;
    var result = false;
    //str_form = "";
    //xmlHttp = "";
    for(var i=0;i<len;i++ ){
        if((elem[i].tagName == "INPUT") && (elem[i].type == "checkbox")){
            if(elem[i].checked == true){
                result = true;
                //str_form += "id[]=" + elem[i].value + "&";
            }
        }
    }

    if(result){
        //createXmlHttp();
        //doRequestUsingPost();
        frm.action = "couponSelect.php";
        frm.target = "_blank";
        frm.submit();
    }else{
        alert("ご希望のクーポンを選択してください。");
    }

}

function createXmlHttp(){
    if(window.ActiveXObject){
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }else if(window.XMLHttpRequest){
        xmlHttp = new XMLHttpRequest();
    }
}

function doRequestUsingPost(){
    var _url="store_ids.php?timestamp=" + new Date().getTime();
    if (!xmlHttp) return;
    xmlHttp.open("post", _url,true);
    xmlHttp.setRequestHeader("content-type","application/x-www-form-urlencoded");
    xmlHttp.onreadystatechange = _out;
    xmlHttp.send(str_form);
}

function _out(){
    if (xmlHttp.readyState==4 && xmlHttp.status == 200) {
        
        window2('couponSelect.php');
    }
}