button#copyFrom:click {
    action-server: copyFromDivContent;
}

button#copyTo:click {
    action-server: copyToDivContent;
}

button#moveTo:click {
    action-server: moveToDivContent;
}

button#clear:click {
    action-server: clearDivContent;
}

button#change:click {
    action-server: getDivContent;
}