function show_facebook_feed(){
	document.getElementById("facebook_feed").style.display="block";
	document.getElementById("twitter_feed").style.display="none";
	document.getElementById("facebook_feed_tab").className="feed_button feed_button_on";
	document.getElementById("twitter_feed_tab").className="feed_button feed_button_off";
}

function show_twitter_feed(){
	document.getElementById("facebook_feed").style.display="none";
	document.getElementById("twitter_feed").style.display="block";
	document.getElementById("facebook_feed_tab").className="feed_button feed_button_off";
	document.getElementById("twitter_feed_tab").className="feed_button feed_button_on";
}