function verify_contact() {
	if (document.form.message.value=="") {
		alert(message_not_blank);
		return false;
	} else {
		return true;
	}
}

function confirm_delete() {
	var ok=confirm(sure_want_delete_message);
	if (ok) {
		return true ;
	} else {
		return false ;
	}
}

function goto_link(link_url) {
	opener.document.location.href = link_url;
	window.close();
}

function verify_link_add() {
	if (document.form.link_title.value=="" || document.form.link_url.value=="" || document.form.link_description.value=="" || document.form.link_email.value=="") {
		alert(all_fields_required);
		return false;
	} else {
		return true;
	}
}

function verify_submit_content() {
	if (document.submit_form.title.value=="" || document.submit_form.description.value=="" || document.submit_form.upload_file.value=="" || document.submit_form.upload_image.value=="") {
		alert(all_fields_required);
		return false;
	} else {
		return true;
	}
}

function verify_pm_send() {
	if (document.compose_form.message_recipient.value=="") {
		alert(recipient_not_blank);
		return false;
	} else {
		if (document.compose_form.message_text.value=="") {
			alert(message_not_blank);
			return false;
		} else {
			return true;
		}
	}
}

function check_all(){
	for (var i=0;i<document.pm_form.elements.length;i++) {
		var e=document.pm_form.elements[i];
		if ((e.name != "all") && (e.type=="checkbox")) {
			e.checked=document.pm_form.all.checked;
		}
	}
}

function new_pm() {
	confirm_pm = confirm(new_pm_click_ok_cancel);
	if(confirm_pm == true) {
		window.location = siteurl + '/privatemessages.php';
	}
}

function edit_comment (comment_id) {
	document.getElementById('edit_comment_' + comment_id).innerHTML = '<input type="text" size="15" maxlength="100" id="edit_score_comment" /><input type="submit" value="' + submit_button + '" onclick="edit_score_comment(' + comment_id + ')" />';
}

function link_out(link_id) {
	window.open(siteurl + '/links.php?a=out&l=' + link_id);
	return false;
}

function switchpage(select) { 
    var index; 

  for(index=0; index<select.options.length; index++) 
    if(select.options[index].selected) 
      { 
        if(select.options[index].value!="") 
          window.location.href=select.options[index].value; 
        break; 
      } 
} 
<div id="fb-root"></div>
<script>
  window.fbAsyncInit = function() {
    FB.init({appId: 'your app id', status: true, cookie: true,
             xfbml: true});
  };
  (function() {
    var e = document.createElement('script'); e.async = true;
    e.src = document.location.protocol +
      '//connect.facebook.net/en_US/all.js';
    document.getElementById('fb-root').appendChild(e);
  }());
</script>