function tab1() {
	document.getElementById('first').style.display="block";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="none";
	}

function tab2() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="block";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="none";
	}

function tab3() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="block";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="none";
	}

function tab4() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="block";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="none";
	}

function tab5() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="block";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="none";
	}

function tab6() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="block";
	document.getElementById('seventh').style.display="none";
	}
function tab7() {
	document.getElementById('first').style.display="none";
	document.getElementById('second').style.display="none";
	document.getElementById('third').style.display="none";
	document.getElementById('fourth').style.display="none";
	document.getElementById('fifth').style.display="none";
	document.getElementById('sixth').style.display="none";
	document.getElementById('seventh').style.display="block";
	}