// JavaScript Document
function showimg1_1(){
document.top_core01.src = "img/top_core01_1.gif";
}

function showimg1_2(){
document.top_core01.src = "img/top_core01_2.gif";
}

function showimg1_3(){
document.top_core01.src = "img/top_core01_3.gif";
}
function showimg2_1(){
document.top_core02.src = "img/top_core02_1.gif";
}

function showimg2_2(){
document.top_core02.src = "img/top_core02_2.gif";
}

function showimg2_3(){
document.top_core02.src = "img/top_core02_3.gif";
}
function showimg3_1(){
document.top_core03.src = "img/top_core03_1.gif";
}

function showimg3_2(){
document.top_core03.src = "img/top_core03_2.gif";
}

function showimg3_3(){
document.top_core03.src = "img/top_core03_3.gif";
}