I initialise my tabbar through the _start.js file (only HTML

The ID of tabbar can be used as js reference for tabbar initialization.
    <div id=“a_tabbar” class=“dhtmlxTabBar” …


But the decting of the moment when tabbar already initialized can be problematic, the latest version of tabbar ( not release yet ) support the special onInit event for such purpose
        <div onInit=“custom_tab()” id=“a_tabbar” class=“dhtmlxTabBar” …

function custom_tab(){
To get onInit method - please use attached js file instead of original one.

also , if you need only to select tab after init you can use “select” attribute
    <div onInit=“custom_tab()” select=“b4” id=“a_tabbar” class=“dhtmlxTabBar” …

dhtmlXTabBar_start.zip (850 Bytes)