if (document.images) {
} else {
     alert ("An error occured; you are using a browser that does not support the JavaScript at this site");
}

Load1 = new Image(); Load1.src = 
"/wp-content/themes/mec/images/news2.gif";
Load2 = new Image(); Load2.src = 
"/wp-content/themes/mec/images/bulletinboard2.gif";
Load3 = new Image(); Load3.src = 
"/wp-content/themes/mec/images/photos2.gif";
Load4 = new Image(); Load4.src = 
"/wp-content/themes/mec/images/liveshowarchive2.gif";
Load5 = new Image(); Load5.src = 
"/wp-content/themes/mec/images/links2.gif";
Load6 = new Image(); Load6.src = 
"/wp-content/themes/mec/images/store2.gif";

    function rollOverMe(thisOne) {
          if (document.images) {
               document.images[thisOne].src = 
"/wp-content/themes/mec/images/" + thisOne + 
"2.gif"
          } else {
               alert ("An error occured. You are using a browser that does not support the JavaScript at this site.");
          }
     }

     function rollOverMeBack(thisOne) {
          if (document.images) {
               document.images[thisOne].src = 
"/wp-content/themes/mec/images/" + thisOne + 
"1.gif"
          } else {
               alert ("An error occured. You are using a browser that does not support the JavaScript at this site.");
          }
     }