John is developing a News Portal and uses Client API to use features provided by the browser. He needs to know the major and minor build values of the browser. Which function of the Client API should he use to retrieve the build values?

Which are the drawbacks of postback?

Which one contains skin-definition user controls that are precompiled in the format the skinning engine requires?

Which of the following is correct regarding the statements given below? Statement 1: A skin package should make use of a manifest file to identify the various files. Statement 2: The manifest file adds some overhead to the skin creation process.