function showhide_menu(show_menu)
{
	if (show_menu=="1")
		{
		document.getElementById("menu1").style.display="block";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="2")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="block";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="3")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="block";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="4")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="block";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="5")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="block";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="6")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="block";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="7")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="block";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="8")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="block";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="9")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="block";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="10")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="block";
		document.getElementById("menu11").style.display="none";
		}
	if (show_menu=="11")
		{
		document.getElementById("menu1").style.display="none";
		document.getElementById("menu2").style.display="none";
		document.getElementById("menu3").style.display="none";
		document.getElementById("menu4").style.display="none";
		document.getElementById("menu5").style.display="none";
		document.getElementById("menu6").style.display="none";
		document.getElementById("menu7").style.display="none";
		document.getElementById("menu8").style.display="none";
		document.getElementById("menu9").style.display="none";
		document.getElementById("menu10").style.display="none";
		document.getElementById("menu11").style.display="block";
		}
}
function showhide_news_right(show_news)
{
	if (show_news=="1")
		{
		document.getElementById("news").style.display="block";
		document.getElementById("news_student").style.display="none";
		}
	if (show_news=="2")
		{
		document.getElementById("news").style.display="none";
		document.getElementById("news_student").style.display="block";
		}

}