function menuchange(targetId){
		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(targetId).style.display = "block";
		
}


function akcije(targetId){
		document.getElementById("atab1").style.display = "none";
		document.getElementById("atab2").style.display = "none";
		document.getElementById("atab3").style.display = "none";
		
  		document.getElementById(targetId).style.display = "block";
		
}


function berza(targetId){
		document.getElementById("btab1").style.display = "none";
		document.getElementById("btab2").style.display = "none";

		
  		document.getElementById(targetId).style.display = "block";
		
}


function news(targetId){
		document.getElementById("netab1").style.display = "none";
		document.getElementById("netab2").style.display = "none";
		document.getElementById("netab3").style.display = "none";
		
  		document.getElementById(targetId).style.display = "block";
		
}

function nvst(targetId){
		document.getElementById("nvtab1").style.display = "none";
		document.getElementById("nvtab2").style.display = "none";
		document.getElementById("nvtab3").style.display = "none";
		
  		document.getElementById(targetId).style.display = "block";
		
}

function obavestenja(targetId){
		document.getElementById("obavtab1").style.display = "none";
		document.getElementById("obavtab2").style.display = "none";
		document.getElementById("obavtab3").style.display = "none";
		
  		document.getElementById(targetId).style.display = "block";
		
}