function getPlodeState(strImg) {
  objImg = document.getElementById(strImg);
  var arrPlodeState = objImg.src.match(/p(p|m)\.gif$/);
  var PlodeState = null;
  if (arrPlodeState.length == 2) PlodeState = arrPlodeState[1];
  return PlodeState;
}

function ExOrImplode(strImg,strTrs) {
  if (window.event && window.event.srcElement.className == "aTop") return;
  objImg = document.getElementById(strImg);
  var PlodeState = getPlodeState(strImg);
  var newPlodeState = null;
  if (PlodeState == 'p') {
    newPlodeState = 'm';
    displayStyle = '';
  }else{
    newPlodeState = 'p';
    displayStyle = 'none';
  }

  if (strTrs) {
    var arrTrs = strTrs.split(",");
    for (var t=0; t<arrTrs.length; t++) {
      document.getElementById(arrTrs[t]).style.display = displayStyle;
    }
  }
  objImg.src = objImg.src.replace(/p(p|m)\.gif/, 'p' + newPlodeState + '.gif');
}

function doShowHide(obj) {
  if (typeof(obj)=="string") obj = document.getElementById(obj);
  obj.style.display = (obj.style.display == "none") ? "" : "none";
}