function ukryjWa()
{
    if (document . getElementById)
    {
        var wybrane = new Array()
		wybrane = ukryjWa . arguments;
        for (i = 0; i < wybrane . length; i++)
        {
            target = document . getElementById(wybrane[i]);
            target . style . display = "none";
        }
    }
}

function pokazWa()
{
    if (document . getElementById)
    {
        var dwybrane = new Array() 
		dwybrane = pokazWa . arguments;
        for (i = 0; i < dwybrane . length; i++)
        {
            target = document . getElementById(dwybrane[i]);
            if (target . style . display = "")
            	{
			//alert(dwybrane[i]);
            		target . style . display = "none";
            	}
        }
    }
}


function f_test2(id, uid1, uid2)
{
   
            target_red    = document . getElementById('btn_1');
            target_black1 = document . getElementById('btn_2');
            target_black2 = document . getElementById('btn_3');
	    //alert(id + uid1 + uid2);

	switch (id)
	{
	  case 'ekran1':
            target_red.style.backgroundImage = 'url(./css_master/btn_red.gif)';
            target_black1.style.backgroundImage = 'url(./css_master/btn_black.gif)';
            target_black2.style.backgroundImage = 'url(./css_master/btn_black.gif)';
          break;
	  case 'ekran2':
            target_red.style.backgroundImage = 'url(./css_master/btn_black.gif)';
            target_black1.style.backgroundImage = 'url(./css_master/btn_red.gif)';
            target_black2.style.backgroundImage = 'url(./css_master/btn_black.gif)';
          break;
	  case 'ekran3':
            target_red.style.backgroundImage = 'url(./css_master/btn_black.gif)';
            target_black1.style.backgroundImage = 'url(./css_master/btn_black.gif)';
            target_black2.style.backgroundImage = 'url(./css_master/btn_red.gif)';
          break;
        }

            ukryjWa(uid1);
            ukryjWa(uid2);
            ukryjWa(id);
            pokazWa(id);
            //target = document . getElementById(dwybrane[i]);
}