// (c) John Moore 11 June 2007
// Needed in the stylesheet for the element
//	filter:alpha(opacity=100); 
//	-moz-opacity:0.5;

// This makes the transition/appearance effect
function transition(element, value)
{	
	if(navigator.appName.indexOf("Microsoft") == -1)
	{
		element.style.MozOpacity = value / 100;
	}
	else if(navigator.appName.indexOf("Microsoft") != -1)
	{
		element.filters.alpha.opacity = value;	
	}
}

function cover() {
  var blanket = document.getElementById("blanket");
  var _width = screen.availWidth;
  var _height = screen.availHeight;
  blanket.style.top = 0;
  blanket.style.left = 0;
  blanket.style.position = "absolute";
  blanket.style.width = _width + "px";
  blanket.style.height = _height + "px";
  blanket.style.display = "inline";
  blanket.style.zIndex = "2";
  
  var letter = document.getElementById("letter");
  var letterWidth = letter.offsetWidth;
  var letterHeight = letter.offsetHeight;
  letter.style.top = ((_height - 300) / 2) - 20;
  letter.style.left = (_width - 450) / 2;
  letter.style.position = "absolute";  
  letter.style.display = "inline";
}