//Zmień obrazek
function change_img( prefix, id )
{
 var cbox=document.getElementById( 'cbox_' + prefix + id );
 var img=document.getElementById( 'img_' + prefix + id );
 
 if( !cbox.checked )
  {
  	img.src="/images/apply.png";
  	cbox.checked=1;
  }else
  {
  	img.src="/images/no.png";
  	cbox.checked=0;
  }
}