//*** 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]();
}