function hide(elem) {
	elem.style.visibility='hidden';
	elem.style.display='none';
}

function show(elem) {
	elem.style.visibility='visible';
	elem.style.display='block';
}

function getelem(id) {
	return document.getElementById(id);
}

function showtext1() {
	show(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text3'));
	hide(getelem('text4'));
	hide(getelem('text5'));
	hide(getelem('text6'));
	hide(getelem('text7'));

}

function showtext2() {
	show(getelem('text2'));
	hide(getelem('text1'));
	hide(getelem('text3'));
	hide(getelem('text4'));
	hide(getelem('text5'));
	hide(getelem('text6'));
	hide(getelem('text7'));

}

function showtext3() {
	show(getelem('text3'));
	hide(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text4'));
	hide(getelem('text5'));
	hide(getelem('text6'));
	hide(getelem('text7'));

}

function showtext4() {
	show(getelem('text4'));
	hide(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text3'));
	hide(getelem('text5'));
	hide(getelem('text6'));
	hide(getelem('text7'));

}

function showtext5() {
	show(getelem('text5'));
	hide(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text3'));
	hide(getelem('text4'));
	hide(getelem('text6'));
	hide(getelem('text7'));

}

function showtext6() {
	show(getelem('text6'));
	hide(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text3'));
	hide(getelem('text4'));
	hide(getelem('text5'));
	hide(getelem('text7'));

}
function showtext7() {
	show(getelem('text7'));
	hide(getelem('text1'));
	hide(getelem('text2'));
	hide(getelem('text3'));
	hide(getelem('text4'));
	hide(getelem('text5'));
	hide(getelem('text6'));
}