Added try catch for assert since firefox won't allow the access of caller.
Added try catch for assert since firefox won't allow the access of caller.

Fiware/webui.Xml3d.js,Fiware/webui.Xml3d.js,CCLDESTY/xml3d.js,xml3d/xml3d.js,CCLDESTY/xml3d.js,ariyapour/xml3d.js,ariyapour/xml3d.js,xml3d/xml3d.js