var EventUtil = new Object;
  EventUtil.addEventHandler = function (oTarget, sEventType, fnHandler) {
      if (oTarget.addEventListener) {
          oTarget.addEventListener(sEventType, fnHandler, false);
      } else if (oTarget.attachEvent) {
          oTarget.attachEvent("on" + sEventType, fnHandler);
      } else {
          oTarget["on" + sEventType] = fnHandler;
      }
  };
          
  EventUtil.removeEventHandler = function (oTarget, sEventType, fnHandler) {
      if (oTarget.removeEventListener) {
          oTarget.removeEventListener(sEventType, fnHandler, false);
      } else if (oTarget.detachEvent) {
          oTarget.detachEvent("on" + sEventType, fnHandler);
      } else { 
          oTarget["on" + sEventType] = null;
      }
  };
  
  EventUtil.formatEvent = function (oEvent) {
  
      if (typeof oEvent.charCode == "undefined") {
          oEvent.charCode = (oEvent.type == "keypress") ? oEvent.keyCode : 0;
          oEvent.isChar = (oEvent.charCode > 0);
      }
      
      if (oEvent.srcElement && !oEvent.target) {
          oEvent.eventPhase = 2;
          oEvent.pageX = oEvent.clientX + document.body.scrollLeft;
          oEvent.pageY = oEvent.clientY + document.body.scrollTop;
          
          if (!oEvent.preventDefault) {
                  oEvent.preventDefault = function () {
                      this.returnValue = false;
                  };
          }
  
          if (oEvent.type == "mouseout") {
              oEvent.relatedTarget = oEvent.toElement;
          } else if (oEvent.type == "mouseover") {
              oEvent.relatedTarget = oEvent.fromElement;
          }
  
          if (!oEvent.stopPropagation) {
                  oEvent.stopPropagation = function () {
                      this.cancelBubble = true;
                  };
          }
          
          oEvent.target = oEvent.srcElement;
          oEvent.time = (new Date).getTime();
      
      }
      
      return oEvent;
  };
  
  EventUtil.getEvent = function() {
      if (window.event) {
          return this.formatEvent(window.event);
      } else {
          return EventUtil.getEvent.caller.arguments[0];
      }
  };