//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)


//***Cross browser attach event function. For 'evt' pass a string value with the leading "on" omitted
//***e.g. AttachEvent(window,'load',MyFunctionNameWithoutParenthesis,false);

function AttachEvent(obj,evt,fnc,useCapture)
{
	if (!useCapture) useCapture=false;
	if (obj.addEventListener)
	{
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) 
		return obj.attachEvent("on"+evt,fnc);
	else
	{
		MyAttachEvent(obj,evt,fnc);
		obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
	}
} 

//The following are for browsers like NS4 or IE5Mac which don't support either
//attachEvent or addEventListener
function MyAttachEvent(obj,evt,fnc)
{
	if (!obj.myEvents) 
		obj.myEvents={};
		
	if (!obj.myEvents[evt]) 
		obj.myEvents[evt]=[];
		
	var evts = obj.myEvents[evt];
	evts[evts.length] = fnc;
}

function MyFireEvent(obj,evt){
	if (!obj || !obj.myEvents || !obj.myEvents[evt]) 
		return;
		
	var evts = obj.myEvents[evt];
	for (var i=0,len=evts.length; i < len; i++) 
		evts[i]();
}