vt7 - lots of unreachable code after return statement

This warnings are in:

Also JQMIGRATE: jQuery.browser is deprecated that can easly be updated to 1.4.1 release

unreachable code after return statement[See more]  moment.min.js:6:12384
unreachable code after return statement[See more] validation.js:69:2
unreachable code after return statement[See more]  Vtiger.js:243:2
unreachable code after return statement[See more]  Popup.js:339:2
unreachable code after return statement[See more]  Popup.js:501:2
unreachable code after return statement[See more]  AdvanceSearch.js:330:2
unreachable code after return statement[See more]  Vtiger.js:243:2
unreachable code after return statement[See more]  Vtiger.js:243:2