document.observe("dom:loaded", function() {
	//sizeHeader();
	//Event.observe(window, 'resize', sizeHeader);
	if($('tell_a_friend_top')) {
		//$('tell_a_friend_top').observe('click', new Effect.ScrollTo('taf'));
	}
});

function sizeHeader() {
	var dimensions = document.viewport.getDimensions();
	var headerheight = Math.round(dimensions.height / 3.35);
	if(headerheight > 305) headerheight = 305;
	$('header').setStyle({
		height: headerheight+"px"
	});
}

function toggleHide(id) {

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

}

function jump2taf() { // Jump to the tell a friend anchor if exsists 
	location.href="#taf";
}