var current = 1;
var current2 = 1;
function change_option7(number,index){
document.getElementById('label7' + current).className = '';
document.getElementById('content7' + current).style.display = 'none';
     document.getElementById('label7' + index).className = 'current';
     document.getElementById('content7' + index).style.display = 'block';
current = index;
}
function change_option8(number,index){
document.getElementById('label8' + current2).className = '';
document.getElementById('content8' + current2).style.display = 'none';
     document.getElementById('label8' + index).className = 'current';
     document.getElementById('content8' + index).style.display = 'block';
current2 = index;
}