Hi Dolly,

Haven't tried Mouse Lab so I can't say. As far as the WebTracker item type goes, it's pretty straightforward--just select the item type in your questionnaire. List the starting file or URL in the fielname field. That's it--the subject just clicks on Continue when they are done and the browsing data are written to a file in your data folder.

The following is a blurb from the user's guide:

The HTML item type allows you to present HTML and other "browser-compatible" files. The WebTracker item extends this functionality by tracking a subject's behaviour while browsing through a sequence of HTML or other browser-compatible files. It stores each link that the subject follows as well as the time at which the link was followed and how long the subject stayed there before continuing to the next link. The item ends when the subject clicks the "Continue" button. These data are all written to a separate spreadsheet file (.csv) that will be named after the variable name you assigned to the WebTracker item and will be located in the experiment's data folder.
I notice one thing it omits is that you can, I think, optionally add a password (x) parameter to the item in order to indicate a file or URL that will end the item automatically. For example, if you entered (xhttp://www.empirisoft.com) in the parameters field and the subject browses to that link then the item would end at that point.