function main_navi() {
document.write('');
}
function main_img() {
document.write('');
}
function biz_img() {
document.write('');
}
function intro_img() {
document.write('');
}
function service_img() {
document.write(' ');
}
function intro_left() {
document.write('');
}
function biz_left() {
document.write('');
}
function service_left() {
document.write('');
}