function showNav(pTab,pCount) {
	for (iTab=1;iTab<=pCount;iTab++) 
	{
    document.getElementById('n' + iTab).style.display = 'none';
	  document.getElementById('ntab' + iTab).className = 'ntab';
	}

	if(pTab == 1)
  {
    document.getElementById('n1').style.display = 'block';
	  document.getElementById('ntab1').className = 'ntab-active-start';
  }
  else
  {
    document.getElementById('n' + pTab).style.display = 'block';
	  document.getElementById('ntab' + (pTab - 1)).className = 'ntab-adj';
	  document.getElementById('ntab' + pTab).className = 'ntab-active';
  }
}