jQuery cant see dom element

Hello everyone!
Im trying to emplement mp3 player by using jquery plugin jpleer.
Im getting error on of plugin initialization.

The DOM element couldnt be found when

$(document).ready(function(){alert($('#myelement').length)});

alerts 0
element is in MENU.html of the MENU starter template.
How can i solve this problem and make an element on children template (abstract) init jquery fn.??