var o1,o2,o3,o4,o5,o6;
if (document.images){
imag = new Array();
   imag[0] = "/images/about.gif";
   imag[1] = "/images/about_ON.gif";
   imag[2] = "/images/current.gif"
   imag[3] = "/images/current_ON.gif"
   imag[4] = "/images/contact.gif"
   imag[5] = "/images/contact_ON.gif"
   imag[6] = "/images/join.gif"
   imag[7] = "/images/join_ON.gif"
   imag[8] = "/images/photo.gif"
   imag[9] = "/images/photo_ON.gif"
   imag[10] = "/images/links.gif"
   imag[11] = "/images/links_ON.gif"
   im = new Array();
   for (var i = 0; i < imag.length; i++)
      {
	  im[i] = new Image();
	  im[i].src = imag[i];
	  }
    }
	function toggleImage(imgName,num){
	   if (document.images && imgName){
	      imgName.src = im[num].src;
		  }
	   return;
	}