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


function fadein(id) 
{
	var level = 0;
	while(level <= 1)
	{
		setTimeout( "gradient('" + id + "'," + level + ")", (level* 1000) + 10);
		level += 0.01;
	}
}


// Open the lightbox


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

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


// Close the lightbox

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


// signal now lightbox
function gradientsignal(id, level)
{
	var signal = document.getElementById(id);
	signal.style.opacity = level;
	signal.style.MozOpacity = level;
	signal.style.KhtmlOpacity = level;
	signal.style.filter = "alpha(opacity=" + level * 100 + ")";
	signal.style.display="block";
	return;
}


function fadeinsignal(id) 
{
	var level = 0;
	while(level <= 1)
	{
		setTimeout( "gradientsignal('" + id + "'," + level + ")", (level* 1000) + 10);
		level += 0.01;
	}
}


// Open the lightbox


function opensignal(signaltitle, fadinsignal)
{
  var signal = document.getElementById('signal'); 
  document.getElementById('filtersignal').style.display='block';

  var rtitle = document.getElementById('signal_title');
  rtitle.innerHTML = signaltitle;
  
  if(fadinsignal)
  {
	 gradientsignal("signal", 0);
	 fadeinsignal("signal");
  }
  else
  { 	
    signal.style.display='block';
  }  	
}


// Close the lightbox

function closesignal()
{
   document.getElementById('signal').style.display='none';
   document.getElementById('filtersignal').style.display='none';
}