function initOver() {
  arr_loads = new Array();
  i=1;
  while (i<1000) {
    elem = document.getElementById('over'+i);
    if (elem) {
      if (elem.src) {
        arr_loads[i] = new Image();
        pos=elem.src.lastIndexOf('.');
        arr_loads[i].src = elem.src.substring(0, pos)+'a'+elem.src.substring(pos);
        elem.osrc = elem.src;
        elem.onmouseover = function(){pos=this.src.lastIndexOf('.');this.src=this.src.substring(0, pos)+'a'+this.src.substring(pos)};
        elem.onmouseout = function(){this.src=this.osrc};
      }
    }
    else break;
    i++;
  }
}

function Show(obj) {
  document.all(obj).style.display ='';
}
function Hide(obj) {
  document.all(obj).style.display="none";
}
function None(obj) {
  Hide(obj);
}