【正文】 to find the information they want because of the limited screen size. Some mercial products reformat web pages. However, the result pages still contain irrelevant information. We propose a system to personalize users’ mobile web pages. A user can determine which blocks in a web page should be retained. The sequence of these blocks can also be altered according to individual preferences.1. Introduction. PrefaceNowadays, we can build a mobile Web application easily. Take the ASP. NET mobile controls [1] (formerly known as MMIT, short for the Microsoft Mobile Internet Toolkit) for example, it reduces the work required for developers to develop applications that target different types of mobile devices, like mobile phones and PDAs. At runtime, MMIT will automatically detect the target device and return the proper presentation format. Thus, the developers can focus on the application logic without worrying about the presentation issues. Similar academic researches on this topic include [2] and [3]. Both of them provide plugins for famous IDEs, such as JBuilder and Visual respectively, to assist developers to author a single generic application. Acpanied with the PUML transformation technology [4], this generic application can be further transformed into specific target formats for different mobile devices.. MotivationWidespread of mobile devices makes it mon to browse Web pages via them. However, most Web pages are mainly designed for desktop puters that are equipped with big screens. When browsing on mobile devices, a user might have to scroll up and down, left and right all the time to find the information they want. Because of the limited screen size, this kind of operation is really not userfriendly at all.Fortunately, some famous websites have another simplified version of Web content specially provided for mobile devices, such as Google Mobile [5] and Yahoo Mobile [6]. On the other hand, it is a heavy burden on Web developers to craft and maintain multiple versions of the same website. Even with the help of the fascinating toolkits.If we resize the original Web page to fit the width of mobile device, the vertical scroll bar will be too long to view, and the information is crowded. On the other hand, if we provide another version of the original Web page, there may be some important information lost in the mobile version, and the transformation of each page costs a lot for Web page developers. Hence, in this research, we propose a system that is designed to help users to personalize their mobile Web pages for handheld device browsing.. Research objectivesIn this subsection, the four major research objectives are listed and introduced briefly.. EasytouseIt does not make sense to launch another program other than the browser to personalize a Web page. When a user surfs on the Internet and finds a Web page that interests him/her, the configuration tool of this system should be able to pop up in the browser window somehow right away. Moreover, all the codes needed to acplish this job (. personalize Web pages) should be downloaded on the fly when accessed, thus allowing a user to work on different puters at different places.. Personalizing Web pages visuallyWeb pages are usually posed of header, footer, sidebar, and content areas [7]. Parts of them are used to maintain a consistent style for the website, and other parts of them are used for navigation. Some renowned websites may even contain a lot of advertisements on it. In many Web pages, only a few of information is really needed to be shown on the mobile phone screen. This research also aims at allowing a user to determine which parts of a Web page should be retained while browsing this page with their mobile device.A friendly user interface should thus be available for a user to perform this task. For example, with appropriate visual aids (such as highlight), a user can choose blocks in a Web page one by one with different granularity. Through the operation of draganddrop, a user can determine the relative position of the chosen blocks according to his/her personal preferences. In short, a user can reconstruct a mobile Web page simply with visual manipulations, and does not have to write any line of code.According to the browser market share survey [8], Microsoft Internet Explorer is still by far the most dominant browser on the Web, with % usage market share, and Firefox has increased its share to %, with the other alternatives, such as Safari, Netscape, Opera, and Mozilla, occupying the remaining share.The downloaded mobile code should work with at least the top two popular browsers, . Microsoft Internet Explorer and Firefox Web browser.. Reducing wireless bandwidth consumptionMore than screen size constraints, th