conflicting functions?

conflicting functions?

Hello,

This post is coming from a new jQuery user.

I am calling 2 jQuery functions (referencing 2 different js files) as below, however they will not work together. They do work individually.        

  $(document).ready(function(){
                    Icons.init();
                $(document).pngFix();
                });   

Could it be that I am calling them in the wrong manner ? I have looked for any variable conflicts in the corresponding 2 sets of code but none are obvious to me.

Thank you.