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* 1000) + 10);
		level += 0.01;
	}
}


// Open the lightbox

function openbox(fadin)
{
  var box = document.getElementById('box'); 
  document.getElementById('filter').style.display='block';
  document.getElementById('filter').style.height = "2750px";
  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';
   document.getElementById('filter').style.height = "0px";
}

// Open the lightbox for mail sending

function openboxsent(fadin , url)
{
  var mail_sent = document.getElementById('mail_sent');
  
  document.getElementById('filter').style.display='block';
  document.getElementById('filter').style.height = "2750px";
  document.getElementById('mail_content').value = url;
  document.getElementById('mail_from').value = 'visitvortex@gmail.com';
  
  if(fadin)
  {
	 gradient("mail_sent", 0);
	 fadein("mail_sent");
  }
  else
  { 	
    mail_sent.style.display='block';
  }  	
}	

// Close the lightbox for mail sending

function closeboxsent()
{
   document.getElementById('mail_sent').style.display='none';
   document.getElementById('filter').style.display='none';
   document.getElementById('filter').style.height = "0px";
   document.getElementById('mail_from').value = '';
}

// Open the lightbox for embedcode

function openboxembed(fadin)
{
  hideVideo();
  
  var embed_code = document.getElementById('embed_code'); 
  document.getElementById('filter').style.display='block';
  document.getElementById('filter').style.height = "1000px";
  if(fadin)
  {
	 gradient("embed_code", 0);
	 fadein("embed_code");
  }
  else
  { 	
    embed_code.style.display='block';
  }  	
}	

// Close the lightbox for embedcode

function closeboxembed()
{
   document.getElementById('embed_code').style.display='none';
   document.getElementById('filter').style.display='none';
   document.getElementById('filter').style.height = "0px";
}