set to playerProductInstall.swf, otherwise the empty string. 
            var xiSwfUrlStr = "playerProductInstall.swf";
            var flashvars = {};
            var params = {};
            params.quality = "high";
            params.bgcolor = "#ffffff";
            params.allowscriptaccess = "sameDomain";
            params.allowfullscreen = "true";
            var attributes = {};
            attributes.id = "main";
            attributes.name = "main";
            attributes.align = "middle";
        