//ÅÜ´«¦r¯Å¤j¤p
function changeFontSize(articleObj,act)
{
	articleObj=document.getElementById(articleObj);

	switch (articleObj.className)
	{
		case "idx1":
			if (act=="max")
				articleObj.className="idx2";
			else
				articleObj.className="idx1";
		break;
		case "idx2":
			if (act=="max")
				articleObj.className="idx3";
			else
				articleObj.className="idx1";
		break;
		case "idx3":
			if (act=="max")
				articleObj.className="idx4";
			else
				articleObj.className="idx2";
		break;
		case "idx4":
			if (act=="max")
				articleObj.className="idx5";
			else
				articleObj.className="idx3";
		break;
		case "idx5":
			if (act=="max")
				articleObj.className="idx6";
			else
				articleObj.className="idx4";
		break;
		case "idx6":
			if (act=="max")
				articleObj.className="idx6";
			else
				articleObj.className="idx5";
		break;
		
	}
}