ωχ φιλε σορι δεν εννοω τετοιο αλλα τετοιο http://www.google.gr/imgres?q=string+tree&um=1&hl=el&sa=N&biw=1280&bih=709&tbm=isch&tbnid=h5g76Q5mfqrNvM:&imgrefurl=http://www.fender.com/community/forums/viewtopic.php%3Ff%3D22%26t%3D65910&docid=e3-Q5NaUvRWBGM&imgurl=http://www.fenderstrat.org/wp-content/uploads/2010/10/fender%252520strat-457512904864963460.jpg&w=400&h=300&ei=HNZwT47aOof04QTf-pi_Ag&zoom=1&iact=hc&vpx=980&vpy=394&dur=856&hovh=194&hovw=259&tx=137&ty=98&sig=102874879508595346895&page=4&tbnh=163&tbnw=187&start=56&ndsp=21&ved=1t:429,r:15,s:56