function nabidka(ident)
{
	
	if(zobrazeno==ident)
	{
		try
		{
		document.getElementById(ident).style.visibility="hidden";
		document.getElementById(ident).style.height="0";
		}
		catch(err) {}
		zobrazeno="nic";
	}
	else
	{
		if(zobrazeno!="nic")
			{
				try
				{
				document.getElementById(zobrazeno).style.visibility="hidden";
				document.getElementById(zobrazeno).style.height="0";
				}
				catch(err) {}
			}
		try
		{
		document.getElementById(ident).style.visibility="visible";
		document.getElementById(ident).style.height="auto";
		}
		catch(err) {}
		zobrazeno=ident;
	}
	
}
function schovej(pocet)
{
zobrazeno = "nic";
pocet=eval(pocet+1);
for(i=1; i< pocet ;i++ )
	{
		a="m"+i;
		document.getElementById(a).style.visibility="hidden";
		document.getElementById(a).style.height="0";
	}	
}