function gradient(id, level)
{
	var box = document.getElementById(id);
	box.style.opacity = level;
	box.style.MozOpacity = level;
	box.style.KhtmlOpacity = level;
	box.style.filter = "alpha(opacity=" + level * 100 + ")";
	box.style.display="block";
	return;
}


function fadein(id) 
{
	var level = 0;
	while(level <= 1)
	{
		setTimeout( "gradient('" + id + "'," + level + ")", (level* 100) + 10);
		level += 0.01;
	}
}


// Open the lightbox


function openbox(formtitle, fadin)
{
  var box = document.getElementById('box'); 
  document.getElementById('filter').style.display='block';

  var btitle = document.getElementById('boxtitle');
  btitle.innerHTML = formtitle;
  
  if(fadin)
  {
	 gradient("box", 0);
	 fadein("box");
  }
  else
  { 	
    box.style.display='block';
  }  	
}


// Close the lightbox

function closebox()
{
   document.getElementById('box').style.display='none';
   document.getElementById('filter').style.display='none';
}

function openbox_session(formtitle_session, fadin_session)
{
  var box_session = document.getElementById('box_session'); 
  document.getElementById('filter_session').style.display='block';

  var btitle_session = document.getElementById('boxtitle_session');
  btitle_session.innerHTML = formtitle_session;
  
  if(fadin_session)
  {
	 gradient("box_session", 0);
	 fadein("box_session");
  }
  else
  { 	
    box_session.style.display='block';
 }  	
}


// Close the lightbox

function closebox_session()
{
   document.getElementById('box_session').style.display='none';
   document.getElementById('filter_session').style.display='none';
}



function openbox_email(formtitle_email, fadin_email)
{
  var box_email = document.getElementById('box_email'); 
  document.getElementById('filter_email').style.display='block';

  var btitle_email = document.getElementById('boxtitle_email');
  btitle_email.innerHTML = formtitle_email;
  
  if(fadin_email)
  {
	 gradient("box_email", 0);
	 fadein("box_email");
  }
  else
  { 	
    box_email.style.display='block';
 }  	
}


// Close the lightbox

function closebox_email()
{
   document.getElementById('box_email').style.display='none';
   document.getElementById('filter_email').style.display='none';
}