function tabSwitch(new_tab, new_content) {

	document.getElementById('second_tab').style.display = 'none';
	document.getElementById('first_tab').style.display = 'none';
	document.getElementById('third_tab').style.display = 'none';
	document.getElementById('fourth_tab').style.display = 'none';
	document.getElementById('fifth_tab').style.display = 'none';
	document.getElementById('sixth_tab').style.display = 'none';
	document.getElementById('seventh_tab').style.display = 'none';
	document.getElementById(new_content).style.display = 'block';	

	document.getElementById('tab_1').className = '';
	document.getElementById('tab_2').className = '';
	document.getElementById('tab_3').className = '';
	document.getElementById('tab_4').className = '';
	document.getElementById('tab_5').className = '';
	document.getElementById('tab_6').className = '';
	document.getElementById('tab_7').className = '';
	document.getElementById(new_tab).className = 'active';		

}