// JavaScript Document

function part(){
var part= document.getElementById('part1');
if ( part.className == 'hide1' ) {
part.className = 'show1';
} else {
part1.className = 'hide1';
}
}


function part1() {
var part1 = document.getElementById('part1');
if ( part1.className == 'hide1' ) {
part1.className = 'show1';
} else {
part1.className = 'hide1';
}
}

function part2() {
var part2 = document.getElementById('part2');
if ( part2.className == 'hide2' ) {
part2.className = 'show2';
} else {
part2.className = 'hide2';
}
}

function part3() {
var part3 = document.getElementById('part3');
if ( part3.className == 'hide3' ) {
part3.className = 'show3';
} else {
part3.className = 'hide3';
}
}

function part4() {
var part4 = document.getElementById('part4');
if ( part4.className == 'hide4' ) {
part4.className = 'show4';
} else {
part4.className = 'hide4';
}
}

function part5() {
var part5 = document.getElementById('part5');
if ( part5.className == 'video_box2' ) {
part5.className = 'video_box';
} else {
part5.className = 'video_box2';
}
}