function DoChangesHead_1(num)
{
	if (num==1) {
     document.getElementById('head1_1').className = "thistab";
     document.getElementById('head1_2').className = "tab";
     document.getElementById('body_1_1').style.visibility = 'visible';
     document.getElementById('body_1_2').style.visibility = 'hidden';
	}
	else if (num==2) {
     document.getElementById('head1_1').className = "tab";
     document.getElementById('head1_2').className = "thistab";
     document.getElementById('body_1_2').style.visibility = 'visible';
	}
 }
 
function DoChangesHead_2(num)
{
	if (num==1) {
     document.getElementById('head2_1').className = "thistab";
     document.getElementById('head2_2').className = "tab";
     document.getElementById('body_2_1').style.visibility = 'visible';
     document.getElementById('body_2_2').style.visibility = 'hidden';
	}
	else if (num==2) {
     document.getElementById('head2_1').className = "tab";
     document.getElementById('head2_2').className = "thistab";
     document.getElementById('body_2_2').style.visibility = 'visible';
	}
 }
 
function DoChangesHead_3(num)
{
	if (num==1) {
     document.getElementById('head3_1').className = "thistab";
     document.getElementById('head3_2').className = "tab";
     document.getElementById('body_3_1').style.visibility = 'visible';
     document.getElementById('body_3_2').style.visibility = 'hidden';
	}
	else if (num==2) {
     document.getElementById('head3_1').className = "tab";
     document.getElementById('head3_2').className = "thistab";
     document.getElementById('body_3_2').style.visibility = 'visible';
	}
 }
 
function DoChangesHead_4(num)
{
	if (num==1) {
     document.getElementById('head4_1').className = "thistab";
     document.getElementById('head4_2').className = "tab";
     document.getElementById('body_4_1').style.visibility = 'visible';
     document.getElementById('body_4_2').style.visibility = 'hidden';
	}
	else if (num==2) {
     document.getElementById('head4_1').className = "tab";
     document.getElementById('head4_2').className = "thistab";
     document.getElementById('body_4_2').style.visibility = 'visible';
	}
 }
 
function DoChangesHead_5(num)
{
	if (num==1) {
     document.getElementById('head5_1').className = "thistab";
     document.getElementById('head5_2').className = "tab";
     document.getElementById('body_5_1').style.visibility = 'visible';
     document.getElementById('body_5_2').style.visibility = 'hidden';
	}
	else if (num==2) {
     document.getElementById('head5_1').className = "tab";
     document.getElementById('head5_2').className = "thistab";
     document.getElementById('body_5_2').style.visibility = 'visible';
	}
 }
 
 
 function DoChangesHead_6(num)
{

	if (num==1) {

     document.getElementById('head1_1').className = "thistab";

     document.getElementById('head1_2').className = "tab";

     document.getElementById('body_1_1').style.visibility = 'visible';

     document.getElementById('body_1_2').style.visibility = 'hidden';

	}

	else if (num==2) {

     document.getElementById('head1_1').className = "tab";

     document.getElementById('head1_2').className = "thistab";

     document.getElementById('body_1_2').style.visibility = 'visible';

	}

 }
 
 function DoChangesHead_7(num)
{

	if (num==1) {

     document.getElementById('head2_1').className = "thistab";

     document.getElementById('head2_2').className = "tab";

     document.getElementById('body_2_1').style.visibility = 'visible';

     document.getElementById('body_2_2').style.visibility = 'hidden';

	}

	else if (num==2) {

     document.getElementById('head2_1').className = "tab";

     document.getElementById('head2_2').className = "thistab";

     document.getElementById('body_2_2').style.visibility = 'visible';

	}

 }