var fDesc=new Array();
fDesc[0] = "24-point game is a mathematical game, relatively simple and more fun. Just use - x ÷ and the 4 digital numbers to calculate the result 24. Click "Start Game", the game will start, and the system will send four cards. Write the expression in the text box, then click the "Calculate" button. Then system will calculate the results, telling if the user is right or wrong. If wrong, you can re-enter the new expression.";

function tShowHide(id, show)
{
	var s = document.getElementById("desc");

	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
		if (document.getElementById('m1'))
			document.getElementById('m1').style.display='none';
		if (document.getElementById('m2'))
			document.getElementById('m2').style.display='none';
		if (document.getElementById('more_txt'))
			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
	}
}