function fade(id, kuda, firstDelay, step, delay) {
 var element = document.getElementById(id);
 if (!element) return;
 if (element.style.display == 'none'){element.style.display = ''}
 else
 if (element.style.display == ''){element.style.display = 'none'};
 if (element.timeoutId) clearTimeout(element.timeoutId);
 element.fadeValue = (kuda == 'in' ? 0 : 1);
 if (typeof(element.style.filter) != 'undefined')
  element.style.filter = 'alpha(opacity='+(element.fadeValue*100)+')'
 else if (typeof(element.style.opacity) != 'undefined')
  element.style.opacity = element.fadeValue
 else {
  element.style.visibility = (kuda == 'in' ? 'visible' : 'hidden');
  return;
 }
 element.fadeStep = (kuda == 'in' ? 1 : -1) * (step || 0.55);
 element.fadeDelay = (delay || 50);
 element.style.visibility = 'visible';
 element.timeoutId = setTimeout('stepFade("'+id+'")', firstDelay*1000);
}

function stepFade(id) {
 var element = document.getElementById(id);
 if (!element) return;
 element.fadeValue += element.fadeStep;
 if (element.fadeValue > 1) element.fadeValue = 1
 else if (element.fadeValue < 0) element.fadeValue = 0;

 if (typeof(element.style.filter) != 'undefined') 
  element.style.filter = 'alpha(opacity='+(element.fadeValue*100)+')'
 else 
  element.style.opacity = element.fadeValue;

 if (0 < element.fadeValue && element.fadeValue < 1){
  element.timeoutId = setTimeout('stepFade("'+id+'")', element.fadeDelay);
// }else{
//  if(element.fadeStep<0 && element.fadeValue == 0){alert(element.fadeStep);element.style.display = 'none';};
 }
}

function starf()
{
if (document.getElementById('ask').style.display=='none') {document.getElementById('ask').style.display='';}
else {document.getElementById('ask').style.display='none';}
}

function inicia()
{
if (document.getElementById('instruc').style.display=='none') {document.getElementById('instruc').style.display=''; 
document.getElementById('poeh').style.display='none';}
}

function starter()
{
if (document.getElementById('telephon').style.display=='none') {document.getElementById('telephon').style.display=''; 
document.getElementById('gotov').style.display='none'; document.getElementById('instruc').style.display='none';}
}

function works()
{
if (document.getElementById('work_m').style.display=='none') {document.getElementById('work').style.display='none';
document.getElementById('hvost_1').style.display='none'; 
document.getElementById('hvost_3').style.display='none';
document.getElementById('hvost_4').style.display='none';
document.getElementById('studio_m').style.display='none';
document.getElementById('critic_m').style.display='none';
document.getElementById('contacts_m').style.display='none';
document.getElementById('work_m').style.display=''; 
document.getElementById('hvost_2').style.display='';
document.getElementById('studio').style.display='';
document.getElementById('critic').style.display='';
document.getElementById('contacts').style.display='';
document.getElementById('big_font2').style.display='';
document.getElementById('big_font1').style.display='none';
document.getElementById('big_font3').style.display='none';
document.getElementById('big_font4').style.display='none';
document.getElementById('portfolios').style.display='';
document.getElementById('critiz').style.display='none';
document.getElementById('contz').style.display='none';
document.getElementById('studior').style.display='none';
}
}

function studios()
{
if (document.getElementById('studio').style.display=='') {document.getElementById('studio_m').style.display='';
document.getElementById('hvost_2').style.display='none';
document.getElementById('hvost_3').style.display='none';
document.getElementById('hvost_4').style.display='none';
document.getElementById('critic_m').style.display='none';
document.getElementById('contacts_m').style.display='none';
document.getElementById('work_m').style.display='none'; 
document.getElementById('studio').style.display='none'; 
document.getElementById('hvost_1').style.display=''; 
document.getElementById('work').style.display='';
document.getElementById('critic').style.display='';
document.getElementById('contacts').style.display='';
document.getElementById('big_font1').style.display='';
document.getElementById('big_font2').style.display='none';
document.getElementById('big_font3').style.display='none';
document.getElementById('big_font4').style.display='none';
document.getElementById('portfolios').style.display='none';
document.getElementById('critiz').style.display='none';
document.getElementById('contz').style.display='none';
document.getElementById('studior').style.display='';
}
}

function critics()
{
if (document.getElementById('critic').style.display=='') {document.getElementById('critic_m').style.display='';
document.getElementById('hvost_1').style.display='none'; 
document.getElementById('hvost_2').style.display='none';
document.getElementById('hvost_4').style.display='none';
document.getElementById('studio_m').style.display='none';
document.getElementById('contacts_m').style.display='none';
document.getElementById('work_m').style.display='none'; 
document.getElementById('critic').style.display='none';
document.getElementById('hvost_3').style.display='';
document.getElementById('work').style.display='';
document.getElementById('studio').style.display=''; 
document.getElementById('contacts').style.display='';
document.getElementById('big_font3').style.display='';
document.getElementById('big_font1').style.display='none';
document.getElementById('big_font2').style.display='none';
document.getElementById('big_font4').style.display='none';
document.getElementById('portfolios').style.display='none';
document.getElementById('critiz').style.display='';
document.getElementById('contz').style.display='none';
document.getElementById('studior').style.display='none';
}
}

function contacts()
{
if (document.getElementById('contacts').style.display=='') {document.getElementById('contacts_m').style.display='';
document.getElementById('hvost_1').style.display='none'; 
document.getElementById('hvost_2').style.display='none';
document.getElementById('hvost_3').style.display='none';
document.getElementById('studio_m').style.display='none';
document.getElementById('critic_m').style.display='none';
document.getElementById('work_m').style.display='none'; 
document.getElementById('contacts').style.display='none';
document.getElementById('hvost_4').style.display='';
document.getElementById('work').style.display='';
document.getElementById('studio').style.display=''; 
document.getElementById('critic').style.display='';
document.getElementById('big_font4').style.display='';
document.getElementById('big_font1').style.display='none';
document.getElementById('big_font2').style.display='none';
document.getElementById('big_font3').style.display='none';
document.getElementById('portfolios').style.display='none';
document.getElementById('critiz').style.display='none';
document.getElementById('contz').style.display='';
document.getElementById('studior').style.display='none';
}
}