TYPO3 Core

I investigated the scripts in typo3/js with JSlint and found some problems which i solved.

As positive side effect the backendsearch-box now has a visible cursor.

• added missing semicolons
• used === and !== with compare of integer and string
• added radix for parseInt
• changed lines if (condition) return; to
  if (condition) {
  return;
  }
• changed a = new Array(); to a = [];
• changed a = new Object(); to a = {};
• some vars where prefixed with var where they was defined before

(issue imported from #M10377)