How to install KDE file chooser in Opera?

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http://www.linuxquestions.org – Hey everyone I'm running linux mint 15 cinnamon 64-bit and I'd like to know if there's a way of installing the KDE file chooser in Opera instead of using the regular GTK file dialog. The KDE dialog seems to have the feature of previewing my images whilst the GTKfilechooser shows only a list with small icons; it isn't very customizable at all. Any responses would be much appreciated. Thank you. (HowTos)