Hãy bắt đầu với hacking tính năng di chuyển chuột. Firefox bao gồm tính năng gọi là di chuyển mượt mà cho phép bạn xem bao nhiêu trang đi theo khi bạn sử dụng Up Trang hoặc Page Down phím hoặc chuột của bạn di chuyển bánh xe. Nếu không có di chuyển mượt mà, Firefox nhảy lên hoặc xuống một trang khi bạn di chuyển, nhưng, với tính năng bật, trình duyệt lướt lên và xuống trang. | 192 Part IV Hacking Navigation Downloads and Searching Let s start with hacking your mouse scroll feature. Firefox includes a feature called smooth scrolling that lets you see just how much of the page goes by when you use the Page Up or Page Down keys or your mouse scroll wheel. Without smooth scrolling Firefox jumps up or down a page when you scroll but with this feature turned on the browser glides up and down the page. With the mouse wheel and smooth scrolling the amount of scroll depends on how fast you flick the wheel but the visual effect is the same. You can turn off smooth scrolling in the Options window under Advanced. Firefox s default scroll effect with the wheel alone is three lines on the web page. You can alter the scroll wheel behavior by holding down certain keys while using the wheel Alt scroll wheel cuts the amount of scroll per wheel notch to one line. Ctrl scroll wheel increases or decreases the size of the type on the web page. Shift scroll wheel moves forward or backward in the browser history for the current tab or window. These settings can be changed via about config. Type mousewheel in the Filter field to narrow the focus to just the default mouse settings. Figure 10-12 shows the mousewheel settings in the about config window. You can alter any of the settings by double-clicking on them. Figure 10-12 The mousewheel options in about config. Chapter 10 Hacking Navigation and Tab Browsing 193 You ll need to keep these action variables in mind 0 is scroll by lines of text in the browser window. 1 is scroll by pages of text in the browser window. 2 is move forward or backward in browser history. 3 is make the page text larger or smaller. For example if you want to change the Shift scroll wheel behavior to scroll a page at a time double-click on the line and change the number in the popup window to change takes effect immediately. To increase the number of lines that the scroll wheel scrolls to 10 .
