function stay(){

	if(document.getElementById("main-contents")){
	var cont = document.getElementById("main-contents");
	cont.style.display = "none";
	}
}

function display(){
var cont = document.getElementById("main-contents");
cont.style.display = "inline";
var link = document.getElementById("linkarea");
link.innerHTML = "<a href='JavaScript:nondisplay()'>記事を閉じる</a>";
}

function nondisplay(){
var cont = document.getElementById("main-contents");
cont.style.display = "none";
var link = document.getElementById("linkarea");
link.innerHTML = "<a href='JavaScript:display()'>記事を全文表示する</a>";
}