function openTetris()
{
	var url;
	var wName;
	var option;

	try{
		url = "/tetris/index.html";
		wName = "tetris";
		option  = "width=354";						// TETRIS‚̀‚Ư : 200
		option += ",height=185";
		option += ",resizable=no";
		window.open(url, wName, option);

	} catch(e){
		alert(e);
	}
}