function hide()
{
	document.getElementById("content").style.visibility = "hidden";
}

function show()
{
	document.getElementById("content").style.visibility = "";
}

function boldX(state)
{
	if(state)
		document.getElementById("x").style.background = "url(./img/xb.png) no-repeat";
	else
		document.getElementById("x").style.background = "url(./img/x.png) no-repeat";
}