In what could signal a trend toward user scripts, Norwegian browser maker Opera Software has picked up the idea, adding similar functionality to beta 3 of Opera 8, acknowledging Greasemonkey on its Web site. (CNET 's tests of various scripts showed that some were more successful than others at delivering promised results.) One, called "Butler," is meant to remove ads on Google results pages, add links to competing search sites, and remove image copy restrictions from Google Print. Others are designed to execute more substantial changes, such as making connections to Yahoo Mail and Gmail more secure. They can also change Slashdot's colors and make the site "less ugly," the page says.
They can, for example, transform story links on The New York Times site and take readers to ad-free, printable versions. By manipulating the Dynamic HTML, or DHTML, of a Web page, Greasemonkey scripts can perform a host of tasks, according to the GreaseMonkey UserScripts page.
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