function clearform()
{
document.shisan.age1.value = "";
document.shisan.age2.value = "";
document.shisan.age3.value = "";
document.shisan.hihoken.checked = false;
document.shisan.nenkin1.value = "";
document.shisan.nenkin2.value = "";
document.shisan.nenkin3.value = "";
document.shisan.kyuyo1.value = "";
document.shisan.kyuyo2.value = "";
document.shisan.kyuyo3.value = "";
document.shisan.sonota1.value = "";
document.shisan.sonota2.value = "";
document.shisan.sonota3.value = "";
}