if (document.images) {
_sd2on = new Image();
_sd2on.src = "/sdimages/sd_R_01_C_03_H.jpg";
_sd2off = new Image();
_sd2off.src = "/sdimages/sd_R_01_C_03.jpg";

_sd3on = new Image();
_sd3on.src = "/sdimages/sd_R_01_C_04_H.jpg";
_sd3off = new Image();
_sd3off.src = "/sdimages/sd_R_01_C_04.jpg";

_sd11on = new Image();
_sd11on.src = "/sdimages/sd_R_02_C_06_H.jpg";
_sd11off = new Image();
_sd11off.src = "/sdimages/sd_R_02_C_06.jpg";

_sd12on = new Image();
_sd12on.src = "/sdimages/sd_R_02_C_07_H.jpg";
_sd12off = new Image();
_sd12off.src = "/sdimages/sd_R_02_C_07.jpg";

_sd13on = new Image();
_sd13on.src = "/sdimages/sd_R_02_C_08_H.jpg";
_sd13off = new Image();
_sd13off.src = "/sdimages/sd_R_02_C_08.jpg";

_sd14on = new Image();
_sd14on.src = "/sdimages/sd_R_02_C_09_H.jpg";
_sd14off = new Image();
_sd14off.src = "/sdimages/sd_R_02_C_09.jpg";

}

function over(imageName) {
    if (document.images) {
      document[imageName].src = eval("_" + imageName + "on.src");
    }
  }
  function off(imageName) {
    if (document.images) {
      document[imageName].src = eval("_" + imageName + "off.src");
    }
  }