function postTwitter(){
myTitle = encodeURI('「'+document.title+'」');
myUrl = document.URL;
twitterURL = 'http://twitter.com/home/?status=' + myTitle +" | "+myUrl;
//window.open(twitterURL);
parent.window.open(twitterURL);
}

function postMixi(){
myUrl = document.URL;
mixiURL = 'http://mixi.jp/share.pl?u='+encodeURIComponent(myUrl)+'&k=8a0a3f577de5e513b0307d88d279e04a6c8dbd9c';
parent.window.open(mixiURL);
}

function postFacebook(){
myTitle = encodeURI('「'+document.title+'」');
myUrl = document.URL;
facebookURL = 'http://www.facebook.com/sharer.php?u='+encodeURIComponent(myUrl)+'&t='+myTitle+'&src=sp';
parent.window.open(facebookURL);
}