var ukazane='';
function ukaz(co,fn){
	if(ukazane != '' && ukazane != co) document.getElementById(ukazane).style.display="none";
	ukazane=co;
	x=document.getElementById(co);
	switch(fn){
	 case 0:
	 	x.style.display="none";
	 break;
 	 case 1:
	 	x.style.display="block";
	 break;
	case 2:
		if(x.style.display=="block") x.style.display="none"; else x.style.display="block";
	break;
	}
}