function msover1(TargetImage){
    ImageName = TargetImage.src
    NewImageName = ImageName.replace('_1','_2');
    TargetImage.src = NewImageName;
}

function msout1(TargetImage){
    ImageName = TargetImage.src
    NewImageName = ImageName.replace('_2','_1');
    TargetImage.src = NewImageName;
}