var currId1 = 'HotProduct_1_o';
var currId2 = 'ClickProduct_1_o';
var currId3 = '1WProduct_1_o';

function changTop1(newId) {
    if (currId1 != null) {
        document.getElementById(currId1).style.display = "none";
        document.getElementById(currId1 + '_t').style.display = "block";
    }
    document.getElementById(newId).style.display = "block";
    document.getElementById(newId + '_t').style.display = "none";
    currId1 = newId;
}
function changTop2(newId) {
    if (currId2 != null) {
        document.getElementById(currId2).style.display = "none";
        document.getElementById(currId2 + '_t').style.display = "block";
    }
    document.getElementById(newId).style.display = "block";
    document.getElementById(newId + '_t').style.display = "none";
    currId2 = newId;
}
function changTop3(newId) {
    if (currId3 != null && document.getElementById(currId3) != null) {
        document.getElementById(currId3).style.display = "none";
        document.getElementById(currId3 + '_t').style.display = "block";
    }
    document.getElementById(newId).style.display = "block";
    document.getElementById(newId + '_t').style.display = "none";
    currId3 = newId;
}