var base= "images/"
		var nrm = new Array();
		var omo = new Array();
		var ocl = new Array();
		var stuff = new Array('nav_home','nav_about','nav_gallery','nav_portraits');
		var select = -1;
		var name2 = "";
		var temp = 0;
		var loaded = (!(navigator.userAgent.indexOf('Netscape6')+1));

   if (document.images)
          {
                  for (i=0;i<stuff.length;i++)
                  {
                          nrm[i] = new Image;
                          nrm[i].src = base + stuff[i] + ".jpg";
                          omo[i] = new Image;
                          omo[i].src = base + stuff[i] + "_on.jpg";
			  			  ocl[i] = new Image;
                          ocl[i].src = base + stuff[i] + "_clic.jpg";
					}
          }

          function over(no)
          {
                  if (document.images && select != no && loaded)
                  {
                          document.images[stuff[no]].src = omo[no].src
                  }
          }

		function out(no)
          {
                  if (document.images && select != no && loaded)
                  {
                          document.images[stuff[no]].src = nrm[no].src
                  }
          }

		function clic(no)
          {
                  if (document.images && loaded)
                  {
                          document.images[stuff[no]].src = ocl[no].src
                          temp = select;
                          select = no;
                          if (temp != -1) {out(temp)}
                  }
          }