Echmultiselect Javascript Error

After clicking on multiselect widget’s body I got error.


Uncaught TypeError: Property '400' of object #<Object> is not a function 

Also I can’t close list.

I think it was a conflict with JavaScript content of bootstrap extension, but I couldn’t find any contradiction.

extensions\EchMultiSelect\assets\jquery.multiselect.js

line 573: this.menu.show(effect, speed); -> this.menu.show();

line 600: this.menu.hide(effect, speed); -> this.menu.hide();