function showPic(picSection, picNum) {
  if (iswap) {
    if (document['mainImage'].src.indexOf(picNum + '.jpg') == -1) {
      document['mainImage'].src= ('graphics/pics/pic_' + picSection + '_' + picNum + '.jpg');
      for (i=1; i<=3; i++) {
	    var newClass = "enlargethumb"
	    if (i == picNum) {
		  newClass += "hi"
  	    }
	    var p = new getObj("enlargethumb00"+i)
	    if (p) {
	      p.obj.className = newClass
		}
	  }
	}
  }
  return false
}