function addEvent(elm, evType, fn, useCapture)
// cross-browser event handling for IE5+, NS6+ and Mozilla 
// By Scott Andrew 
{
  if (elm.addEventListener) { 
    elm.addEventListener(evType, fn, useCapture); 
    return true; 
  } else if (elm.attachEvent) { 
    var r = elm.attachEvent('on' + evType, fn); 
    return r; 
  } else {
    elm['on' + evType] = fn;
  }
}

function dropEvent(elm, evType, fn, useCapture)
// cross-browser event handling for IE5+, NS6+ and Mozilla 
// By Greg Robbins :P 
{
  if (elm.removeEventListener) { 
    elm.removeEventListener(evType, fn, useCapture); 
    return true; 
  } else if (elm.detachEvent) { 
    var r = elm.detachEvent('on' + evType, fn); 
    return r; 
  } else {
    elm['on' + evType] = null;
  }
}

// climb up the tree to the supplied tag.
function ascendDOM(e, target) {
  while (e.nodeName.toLowerCase() != target && e.nodeName.toLowerCase() != 'html')
  {
  	e = e.parentNode;
  	//alert(e.nodeName);
  }
  return (e.nodeName.toLowerCase() == 'html') ? null : e;
}

function fetchTarget(e)
{
	if(window.event && window.event.srcElement)
	{
		return window.event.srcElement;
	}
	else if(e && e.target)
	{
		return e.target;
	}
	else
	{
		return;
	}
}

function findPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}

function cancelClick(e)
{
	if(window.event && window.event.returnValue)
	{
		window.event.returnValue = false;
	}
	if(e && e.preventDefault)
	{
		e.preventDefault();
	}
}
function cancelClickSafari()
{
	return false;
}