function getElementsByClassName(oElm, strTagName, strClassName){
  var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
  var arrReturnElements = new Array();
  strClassName = strClassName.replace(/\-/g, "\\-");
  var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
  var oElement;
  for(var i=0; i<arrElements.length; i++){
    oElement = arrElements[i];
    if(oRegExp.test(oElement.className)){
      arrReturnElements.push(oElement);
    }
  }
  return (arrReturnElements)
}