function chshow(num){
var s = '';
for (var i=1; i <= 100; i++) {
  if (num==i) {
    s = 'tab'+i;
	if(document.getElementById(s).style.display=='') {document.getElementById(s).style.display='none';} else {document.getElementById(s).style.display='';}
    r = 'btn-in-tab'+i;
	if(document.getElementById(r).style.display=='') {document.getElementById(r).style.display='none';} else {document.getElementById(r).style.display='';}
	t = 'ch-in-tab'+i;
	if(document.getElementById(s).style.display=='') {document.getElementById(t).src='images/display-checker-up.gif';} else {document.getElementById(t).src='images/display-checker.gif';}
	c = 'callup'+i;
	if (document.getElementById(c)) {
	   if(document.getElementById(c).style.display=='') {document.getElementById(c).style.display='none';} else {document.getElementById(c).style.display='';}
	}
   } } 
}

function qshow(num){
var s = '';
if (num==1) {
document.getElementById("tab_1_1").style.display='';
document.getElementById("tab_2_2").style.display='none';
document.getElementById("qh2_2").style.color='#999';
document.getElementById("qh2_1").style.color='#900';
	}  else {
document.getElementById("tab_2_2").style.display='';
document.getElementById("tab_1_1").style.display='none';
document.getElementById("qh2_1").style.color='#999';
document.getElementById("qh2_2").style.color='#900';
	}
}

function ishow(num){
var r = ''; var t = '';
for (var i=1; i <= 4; i++) {
if(num==i) {
	r = 'iBox'+i; t = 'box'+i;
document.getElementById(r).style.display=''; document.getElementById(t).className='box-active'; } else {
	r = 'iBox'+i; t = 'box'+i;
document.getElementById(r).style.display='none'; document.getElementById(t).className='box'; }
	}
}