function showZakladka( id, ile )
    {
        for( i=1; i<=ile; i++ )
        {
            old = document.getElementById( 'ge'+i );
            old.style.display = 'none';
            oldMenu = document.getElementById( 'ged'+i );
            oldMenu.className = '';
        }
        current = document.getElementById( 'ge'+id );
        current.style.display = 'block';

        currentMenu = document.getElementById( 'ged'+id );
        currentMenu.className = 'selected_tab';
    }
           
    function showTab( id, ile )
    {
        for( i=1; i<=ile; i++ )
        {
            old = document.getElementById( 'tb'+i );
            old.style.display = 'none';
            oldMenu = document.getElementById( 'tab'+i );
            oldMenu.className = '';
        }
        current = document.getElementById( 'tb'+id );
        current.style.display = 'block';

        currentMenu = document.getElementById( 'tab'+id );
        currentMenu.className = 'selected_tab';
    }

    function showSubTab( id, ile )
    {
        for( i=1; i<=ile; i++ )
        {
            old = document.getElementById( 'stb'+i );
            old.style.display = 'none';
            oldMenu = document.getElementById( 'subtab'+i );
            oldMenu.className = '';
        }
        current = document.getElementById( 'stb'+id );
        current.style.display = 'block';

        currentMenu = document.getElementById( 'subtab'+id );
        currentMenu.className = 'selected_tab';
    }
    
    
    function showMyTab( id, ile, names, selected_content, image ){
    	
    	for( i=1; i<=ile; i++ )
        {
            old = document.getElementById( 'tb'+i );
            old.style.display = 'none';
            oldMenu = document.getElementById( 'tab'+i );
            oldMenu.className = 'unselected_tab';
            oldMenu.innerHTML = names[i-1];
        }
        current = document.getElementById( 'tb'+id );
        current.style.display = 'block';

        
        currentMenu = document.getElementById( 'tab'+id );
        currentMenu.className = 'selected_tab';
        
        left=currentMenu.clientWidth/2;
        
        var clas='class="arrow"';
        var styl='style="margin-left: '+ left +'px"';
        
        var pom="<div "+clas+" "+styl+"></div>";
        
        currentMenu.innerText += currentMenu.text;
        currentMenu.innerHTML += pom;
        
        document.getElementById( 'inwestycje_tlo' ).src=image;
    }
    
    function showMyTab2( id, ile )
    {
    	for( i=1; i<=ile; i++ )
        {
            old = document.getElementById( 'tb'+i );
            old.style.display = 'none';
            oldMenu = document.getElementById( 'tab'+i );
            oldMenu.className = 'inwestycja_'+i;
        }
        current = document.getElementById( 'tb'+id );
        current.style.display = 'block';

        currentMenu = document.getElementById( 'tab'+id );
        currentMenu.className = 'inwestycja_sel_'+id;
        
        
    }