Code showing up under post

This code is showing up under one of my post and I dont know how to remove it:

My website is http://www.the-dropshow.com (its the second post on the homepage)

var button = document.getElementById(’facebook_share_link’) || document.getElementById(’facebook_share_icon’) || document.getElementById(’facebook_share_both’) || document.getElementById(’facebook_share_button’);
if (button) {
button.onclick = function(e) {
var url = this.href.replace(/share\.php/, ’sharer.php’);
window.open(url,’sharer’,’toolbar=0,status=0,width=626,height=436′);
return false;
}

if (button.id === ‘facebook_share_button’) {
button.onmouseover = function(){
this.style.color=’#fff’;
this.style.borderColor = ‘#295582′;
this.style.backgroundColor = ‘#3b5998′;
}
button.onmouseout = function(){
this.style.color = ‘#3b5998′;
this.style.borderColor = ‘#d8dfea’;
this.style.backgroundColor = ‘#fff’;
}
}
}

Why is it showing here and no where else?