var showed; // ;)
var active;
var startup;

//funkcja zmieniajaca style.display na puste
	function enable_display(targetID)
	{
	target = document.getElementById (targetID);
	target.style.display = "";
	}
	
	//funkcja zmieniajaca style.display na "none"
	function disable_display(targetID)
	{
	target = document.getElementById (targetID);
	target.style.display = "none";
	}
	
	
	
	
	
	function show(name) {
        
		var act = document.getElementById("click_" + name);
	    var menu = document.getElementById("menu_" + name);
	   
     var act2 = document.getElementById("click_" + active);
	    var menu2 = document.getElementById("menu_" + active);
		
		if (menu2) menu2.style.visibility = "hidden";
		act2.style.color = "";
      
		
		if (menu) menu.style.visibility = "visible";
		
		
			if (name==active) 
			{
			act.style.color = "#EB880E";
			act.style.background = "black";
			}else
			{
			act.style.color = "white";				
			}
		
		
    }
	
	function hide(name)
	{
		var act = document.getElementById("click_" + name);
	    var menu = document.getElementById("menu_" + name);
		
		
		if (menu) menu.style.visibility = "hidden";
		act.style.color = "";
		
	
		var act2 = document.getElementById("click_" + active);
	  var menu2 = document.getElementById("menu_" + active);
		if (menu2) menu2.style.visibility = "visible";
		act2.style.color = "#EB880E";
		
	}
	
  
  function set_active (name)
  {
    active = name;
    show(active);
    showed=1;
  }
  
  function set_active_sub(name)
  {
    var actual_link = document.getElementById(name);
		actual_link.style.color = "#EB880E";
  }