function tabHighLight(tab)
        {                                                          var InformaBgImage     ="url(img/tabInforma.png)",
                                                                       InformaColor       ="#ffffff",
                                                                       AttivitaBgImage    ="url(img/tabAttivita.png)",
                                                                       AttivitaColor      ="#ffffff",
                                                                       ProposteBgImage    ="url(img/tabProposte.png)",
                                                                       ProposteColor      ="#ffffff",
                                                                       MiaBiblioBgImage   ="url(img/tabMiaBiblio.png)",
                                                                       MiaBiblioColor     ="#ffffff";

                                                              if(tab=="Informazioni")
                                                                {      InformaBgImage     ="url(img/tabWhite.gif)";
                                                                       InformaColor       ="#dc7c20";
                                                                                 Tab.skeda="INFORMAZIONI";
                                                                }
                                                              if(tab=="Attivita")
                                                                {      AttivitaBgImage    ="url(img/tabWhite.gif)";
                                                                       AttivitaColor      ="#d47020";
                                                                                 Tab.skeda="ATTIVITA";
                                                                }
                                                              if(tab=="Proposte")
                                                                {      ProposteBgImage    ="url(img/tabWhite.gif)";
                                                                       ProposteColor      ="#d00000";
                                                                                 Tab.skeda="PROPOSTE";
                                                                }
                                                              if(tab=="MiaBiblio")
                                                                {      MiaBiblioBgImage   ="url(img/tabWhite.gif)";
                                                                       MiaBiblioColor     ="#a00000";
                                                                                 Tab.skeda="MiaBIBLIOTECA";
                                                                }

         document.getElementById("tabInforma").style.backgroundImage  =InformaBgImage;
         document.getElementById("tabInforma").style.color            =InformaColor;

         document.getElementById("tabAttivita").style.backgroundImage =AttivitaBgImage;
         document.getElementById("tabAttivita").style.color           =AttivitaColor;

         document.getElementById("tabProposte").style.backgroundImage =ProposteBgImage;
         document.getElementById("tabProposte").style.color           =ProposteColor;

         document.getElementById("tabMiaBiblio").style.backgroundImage=MiaBiblioBgImage;
         document.getElementById("tabMiaBiblio").style.color          =MiaBiblioColor;
        }