function us1(){
subwin=window.open("us_photo/b1.html","windowopen","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=600,height=349");
}

function us2(){
subwin=window.open("us_photo/b2.html","windowopen","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=600,height=349");
}

function us3(){
subwin=window.open("us_photo/b3.html","windowopen","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=600,height=349");
}