function change_tab(id){
	  if(document.getElementById("tabs-button-4"))
	    count = 4;
	  else if(document.getElementById("tabs"))
		count = 2;
	  else
	    count = 3;
      for( i=1; i<=count; ++i){
        document.getElementById("tabs-"+i).style.display = 'none';
		document.getElementById("tabs-button-"+i).className = '';
      }
      document.getElementById("tabs-"+id).style.display = 'block';
	  document.getElementById("tabs-button-"+id).className = 'select';
	}
function show_hidden(id){

	if(document.getElementById(id).style.display == 'none')
	  document.getElementById(id).style.display = 'block';
	else
	  document.getElementById(id).style.display = 'none';
}
	window.onload = function() {
	  if(document.getElementById("tabs-blog")){
		document.getElementById("tabs-button-1").onclick = function(evt) { change_tab('1'); };
		document.getElementById("tabs-button-2").onclick = function(evt) { change_tab('2'); };
		document.getElementById("tabs-button-3").onclick = function(evt) { change_tab('3'); };
		if(document.getElementById("tabs-button-4"))
		  document.getElementById("tabs-button-4").onclick = function(evt) { change_tab('4'); };
	  }
	  if(document.getElementById("account"))
	    document.getElementById("account").onclick = function(evt) { show_hidden("user-panel"); };
	  
	  if(document.getElementById("tabs")){
	    document.getElementById("tabs-button-1").onclick = function(evt) { change_tab('1'); };
		document.getElementById("tabs-button-2").onclick = function(evt) { change_tab('2'); };
	  }
	  
	}
	
	
function menu(all, id){
  for( i=1; i<=all; ++i){
    document.getElementById("submenu-"+i).style.display = 'none';
    document.getElementById("menu-"+i).className = '';
  }
  document.getElementById("submenu-"+id).style.display = 'block';
  document.getElementById("menu-"+id).className = 'select';
}