if (document.documentElement.clientWidth < 860){
	document.getElementById("topbody").style.overflowX = "auto";
}

function showimg1(){
document.area1.src = "./img/font-s-b02.gif";
document.area2.src = "./img/font-m-b.gif";
document.area3.src = "./img/font-b-b.gif";
}

function showimg2(){
document.area1.src = "./img/font-s-b.gif";
document.area2.src = "./img/font-m-b02.gif";
document.area3.src = "./img/font-b-b.gif";
}

function showimg3(){
document.area1.src = "./img/font-s-b.gif";
document.area2.src = "./img/font-m-b.gif";
document.area3.src = "./img/font-b-b02.gif";
}