var on=new Array();
  var off=new Array();

  function cargar_img (totImg,prefImg) {
     if (document.images)
     {
	for (n=0; n<totImg; n++ )
        {
	  if (n<10)
	  {
	     on[n]=new Image;
	     on[n].src="/senado/_rcs/"+prefImg+"0"+n+"a.gif";

	     off[n]=new Image;
	     off[n].src="/senado/_rcs/"+prefImg+"0"+n+".gif";
	  }
	  else
	  {
	     on[n]=new Image;
	     on[n].src="/senado/_rcs/"+prefImg+n+"a.gif";

	     off[n]=new Image;
	     off[n].src="/senado/_rcs/"+prefImg+n+".gif";
	  }
	}
    }
}


  function img_act (imgName) {
     if (document.images)
     {
         document[imgName].src = on[parseInt(imgName.substring(4,6),10)].src;
     }
   }
  function img_desact (imgName) {
     if (document.images)
        document[imgName].src = off[parseInt(imgName.substring(4,6),10)].src;
   }