jquery code works fine on jsfiddle but only partially (toggle doesnt work) on my website even though same version of jquery -

i've been coding element website on jsfiddle , when tried transfer website (wordpress based), partially works.
doesn't seem jquery not working because expand/ collapse mechanics working fine. seems wrong class toggling , i'd appreciate if you'd me out cuz couldn't find working solution searching.

this code, jsfiddle tells me valid - http://jsfiddle.net/gszc4/

but on website doesn't work/ toggle doesnt work, rest - http://www.roxopolis.de/media/albums/what-would-you-give

    jquery(document).ready(function () {     jquery(".content").hide();     jquery(".content_album").hide();      jquery(".heading").click(function () {         jquery(this).next(".content").slidetoggle(200);     });     jquery("#heading_album").click(function () {         jquery(this).next(".content_album").slidetoggle(400);     });      $('#heading_album').click(function () {         $(this).toggleclass('album_clicked');     });      $('.heading').click(function () {         $(this).toggleclass('album_item_clicked');     }); }); 

change $ sign jquery in code... think there occured conflict between jquery , other framework in wordpress

  jquery(this).toggleclass('album_clicked');   //^^^^---here