takker for gode svar, men noe blir selvsagt ganske teknisk for meg 
det skal være en slik binding..
http://www.google.no/imgres?imgurl=http://www.binet.lv/go.pl%3FIMG%3D32719566O1745&imgrefurl=http://www.binet.lv/just/125/&usg=__sVgPVksLNEUmIPdZX3wGjo1rEDQ=&h=480&w=480&sz=16&hl=no&start=34&zoom=1&tbnid=Fzy8D02yKJPPEM:&tbnh=118&tbnw=137&prev=/images%3Fq%3Drace%2Bcontroll%2Bbindinger%26um%3D1%26hl%3Dno%26rlz%3D1R2ADFA_noNO404%26biw%3D1419%26bih%3D699%26tbs%3Disch:10%2C641&um=1&itbs=1&ei=_nXcTLPHBJG74gbduMDACA&iact=hc&vpx=1093&vpy=344&dur=453&hovh=167&hovw=167&tx=72&ty=91&oei=8nXcTOqVHZDxsgas0IXkCA&esq=3&page=2&ndsp=34&ved=1t:429,r:24,s:34&biw=1419&bih=699
