function display(tab) {

if(tab=="01") {
mess01.style.display="block";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}
	

else if(tab=="02") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="block";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="03") {
mess01.style.display="none";mess03.style.display="block";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}
	

else if(tab=="04") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="block";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}
	

else if(tab=="05") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="block";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="06") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="block";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="07") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="block";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="08") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="block";mess09.style.display="none";
mess08.style.display="block";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="09") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="block";
mess08.style.display="none";mess09.style.display="block";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="10") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="block";
mess11.style.display="none";mess12.style.display="none";}


else if(tab=="11") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="block";mess12.style.display="none";}


else if(tab=="12") {
mess01.style.display="none";mess03.style.display="none";mess05.style.display="none";
mess02.style.display="none";mess04.style.display="none";mess06.style.display="none";
mess07.style.display="none";mess08.style.display="none";mess09.style.display="none";
mess08.style.display="none";mess09.style.display="none";mess10.style.display="none";
mess11.style.display="none";mess12.style.display="block";}







}