function show1(){
	content1.style.display="block";
	content2.style.display="none";
	button1.style.display="none";
	button2.style.display="block";
	button1on.style.display="block";
	button2on.style.display="none";
}

function show2(){
	content1.style.display="none";
	content2.style.display="block";
	button1.style.display="block";
	button2.style.display="none";
	button1on.style.display="none";
	button2on.style.display="block";
}