var num = 1;
var rollFlag = true;

function stopTabRoll(val) {
    rollFlag = false;

    tabDoRoll(val);
}

function stopTabRollForBtn() {
    rollFlag = false;
}

function beginTabRoll() {
    rollFlag = true;
}

function tabDoRoll(val) {
    var obj1 = document.getElementById("dObj1");
    var obj2 = document.getElementById("dObj2");
    //var obj3 = document.getElementById("dObj3");  //À̹ÌÁö °³Ã¼ 2°³·Î º¯°æ¿¡ µû¸¥ ÁÖ¼®Ã³¸®

    obj1.style.display = "none";
    obj2.style.display = "none";
    //obj3.style.display = "none";  //À̹ÌÁö °³Ã¼ 2°³·Î º¯°æ¿¡ µû¸¥ ÁÖ¼®Ã³¸®

    obj1.className = "";
    obj2.className = "";
    //obj3.className = "";  //À̹ÌÁö °³Ã¼ 2°³·Î º¯°æ¿¡ µû¸¥ ÁÖ¼®Ã³¸®

    if (val == "obj1") {
        obj1.style.display = "";
        obj1.className = "Over";

        num = 1;
    } else if (val == "obj2") {
        obj2.style.display = "";
        obj2.className = "Over";

        num = 2;
    }   
//À̹ÌÁö °³Ã¼ 2°³·Î º¯°æ¿¡ µû¸¥ ÁÖ¼®Ã³¸®         
//    else if (val == "obj3") {
//        obj3.style.display = "";
//        obj3.className = "Over";

//        num = 3;
//    }     
}

function rollChange() {
    //alert(rollFlag);
    if (rollFlag) {
    
        if (num == 1) {
            tabDoRoll("obj2");
        } else if (num == 2) {
            tabDoRoll("obj1");
        } 
        //À̹ÌÁö °³Ã¼ 2°³·Î º¯°æ¿¡ µû¸¥ ÁÖ¼®Ã³¸®
//        else if (num == 3) {
//            tabDoRoll("obj1");
//        }         

    } 
}


setInterval("rollChange()", 2000);