this.properties = []; 
this.properties.push(new property(10, 1181, 800, 0, 'tabbladenset', 'true', 'Project summary',true));
this.properties.push(new property(10, 1190, 809, 0, 'tabbladenset', 'true', 'Participants',true));
this.properties.push(new property(10, 1308, 930, 0, 'tabbladenset', 'true', '15',true));
this.properties.push(new property(8, 1308, 930, 0, 'uitklapmenu', 'true', '15',true));
this.properties.push(new property(10, 1207, 825, 0, 'tabbladenset', 'true', 'News and Events',true));