launch pdf ocuments shows web 2.0 popup

I use Lectora 2008My title contains links that open pdf documents. When published to HTML and clicking on the links, most pfd docs open in a web 2.0 style: a web 2.0 popup is shown and you can browse through the pdf. However, some pdfs are just opened in the browser and the whole page is refreshed. I cannot find what controls these different behaviors. Does anyone know?Edited By: jeroenb on 2009-1-23 6:7:9

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