/*************************************************************************

    dw_event.js
    version date June 2003
    to negotiate cross-browser differences in event models
    for browsers that support addEventListener and attachEvent 
        
    This code is from Dynamic Web Coding 
    at http://www.dyn-web.com/
    See Terms of Use at http://www.dyn-web.com/bus/terms.html
    Permission granted to use this code 
    as long as this entire notice is included.

*************************************************************************/

var dw_event = {
  
  add: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.addEventListener) obj.addEventListener(etype, fp, cap);
    else if (obj.attachEvent) obj.attachEvent("on" + etype, fp);
  }, 

  remove: function(obj, etype, fp, cap) {
    cap = cap || false;
    if (obj.removeEventListener) obj.removeEventListener(etype, fp, cap);
    else if (obj.detachEvent) obj.detachEvent("on" + etype, fp);
  }, 

  DOMit: function(e) {
    e = e? e: window.event;
    e.tgt = e.srcElement? e.srcElement: e.target;
    
    // location of event in document
    if (typeof e.pageX != "number") {
      e.pageX = e.clientX  + document.documentElement.scrollLeft + document.body.scrollLeft;
      e.pageY = e.clientY  + document.documentElement.scrollTop + document.body.scrollTop;
    }
    
    if (!e.preventDefault) e.preventDefault = function () { return false; }
    if (!e.stopPropogation) e.stopPropogation = function () { if (window.event) window.event.cancelBubble = true; }
        
    return e;
  }
  
}