Is there any issue with multiple tabs inside a main tab

actually I have a left tab (main tab),loading content using “setContentHref”.
In the content of the left tab,I have four right tabs.
I am loading the right tabs content also using “setContentHref”,these right tabs data is overlapping.
Is there any issue with loading like this.
and this is happening in "chrome"only,where as in safari ,it is working fine

Advice you attach the child tabbar in the main via method attach tabbar and then use setContentHref to avoid overlaping.