Enables select, right-click, copy and drag on pages that disable them.
当前为
1) This script disables the preventDefault function for 'copy', 'contextmenu', 'select', 'selectstart', 'dragstart', 'beforecopy' events
2) This script disables the "return false" in HTML attributes 'oncopy', 'oncontextmenu', 'onselect', 'onselectstart', 'ondragstart', 'onbeforecopy'
