function show(id)
{
  if ( document.getElementById(id).style.display=="block")
    document.getElementById(id).style.display="none";
  else document.getElementById(id).style.display="block";
}

function forum_show(id, img_id)
{
  if ( document.getElementById(id).style.display=="block"){
	  document.getElementById(img_id).src = "img/tlacitka/forum_rozbal_1.png"; 
    document.getElementById(id).style.display="none";
		} else { 
	  document.getElementById(id).style.display="block";
		document.getElementById(img_id).src = "img/tlacitka/forum_rozbal_2.png";
	}
}

function change_image_on(img_src, img_src2)
{
    document.getElementById(img_src).src = img_src2;
}

function change_image_out(img_src2, img_src)
{
    document.getElementById(img_src2).src = img_src;
}

function sub(i)
{  
  var page="sub"+i;  
  document.getElementById(page).submit();  
}

function project(i)
{  
  var page="project"+i;  
  document.getElementById(page).submit();  
}

function form_submit(i)
{    
  document.getElementById(i).submit();  
}