var browser=true;

if(browser && document.images){
   var butObject=new Array();

   butObject['a']= new obData("gfx/a.jpg","gfx/a_aktiv.jpg","a");
   butObject['b']= new obData("gfx/b.jpg","gfx/b_aktiv.jpg","b");
   butObject['c']= new obData("gfx/c.jpg","gfx/c_aktiv.jpg","c");
   butObject['d']= new obData("gfx/d.jpg","gfx/d_aktiv.jpg","d");
   butObject['e']= new obData("gfx/e.jpg","gfx/e_aktiv.jpg","e");
   butObject['f']= new obData("gfx/f.jpg","gfx/f_aktiv.jpg","f"); 
   butObject['g']= new obData("gfx/g.jpg","gfx/g_aktiv.jpg","g");
   butObject['h']= new obData("gfx/h.jpg","gfx/h_aktiv.jpg","h");
   butObject['i']= new obData("gfx/i.jpg","gfx/i_aktiv.jpg","i");
   butObject['j']= new obData("gfx/j.jpg","gfx/j_aktiv.jpg","j");
   butObject['k']= new obData("gfx/k.jpg","gfx/k_aktiv.jpg","k");
   butObject['l']= new obData("gfx/l.jpg","gfx/l_aktiv.jpg","l");
   butObject['m']= new obData("gfx/m.jpg","gfx/m_aktiv.jpg","m");
   butObject['n']= new obData("gfx/n.jpg","gfx/n_aktiv.jpg","n");
   butObject['o']= new obData("gfx/o.jpg","gfx/o_aktiv.jpg","o");
   butObject['p']= new obData("gfx/p.jpg","gfx/p_aktiv.jpg","p");
   butObject['q']= new obData("gfx/q.jpg","gfx/q_aktiv.jpg","q");
   butObject['r']= new obData("gfx/r.jpg","gfx/r_aktiv.jpg","r");
   butObject['s']= new obData("gfx/s.jpg","gfx/s_aktiv.jpg","s");
   butObject['t']= new obData("gfx/t.jpg","gfx/t_aktiv.jpg","t");
   butObject['u']= new obData("gfx/u.jpg","gfx/u_aktiv.jpg","u");
   butObject['v']= new obData("gfx/v.jpg","gfx/v_aktiv.jpg","v");
   butObject['w']= new obData("gfx/w.jpg","gfx/w_aktiv.jpg","w");
   butObject['x']= new obData("gfx/x.jpg","gfx/x_aktiv.jpg","x");
   butObject['y']= new obData("gfx/y.jpg","gfx/y_aktiv.jpg","y");
   butObject['z']= new obData("gfx/z.jpg","gfx/z_aktiv.jpg","z");
}

function obData(repImage, resImage, obNr) {
     this.obNr=obNr;
     this.simg = new Image();
     this.simg.src=repImage;
     this.rimg = new Image();
     this.rimg.src=resImage;
}


function resImage(name) {
      nr=butObject[name].obNr;
      document.images[nr].src=butObject[name].simg.src;
}

function repImage(name){
      nr=butObject[name].obNr;
      document.images[nr].src=butObject[name].rimg.src;
}

function popup_window(url)
{
     window.open(url,"Popup","width=380,height=400,resizable=no,scrollbars=yes");
}