var hideMenu=null;

function imgOn(Num) {
     hideAll();
     if (document.images) {
         document.images["i" +Num].src = eval("i" +Num+ "on.src")
     }
}

function imgOff(Num) {
     if (document.images) {
         document.images["i" +Num].src = eval("i" +Num+ ".src")
     }
}

function Hide(div){

      imgOff(div.charAt(1));
      if (document.getElementById) {
          eval("document.getElementById('"+div+"').style.visibility = 'hidden'");
      }
}

function Show(div){
      if (document.getElementById) {
           eval("document.getElementById('"+div+"').style.visibility = 'visible'");
      }
}


function mImgOn(divNum,Num) {
     clearTimeout(hideMenu);
     if (document.images) {
          document.images["m" +divNum+ "i" +Num].src = eval("m" +divNum+ "i" +Num+ "on.src")
     }
}

function mImgOff(divNum,Num) {
     if (document.images) {
          document.images["m" +divNum+ "i" +Num].src = eval("m" +divNum+ "i" +Num+ ".src")
     }
     hideMenu=setTimeout('hideAll()',500)
}


function hideAll(){
      Hide('m1');
      if(document.getElementById('m2'))  Hide('m2');
}