function addEvent(obj, evType, fn){
	if(obj.addEventListener){
		obj.addEventListener(evType, fn, false);
		return true;
	}
	else if(obj.attachEvent){
		var r	= obj.attachEvent("on" + evType, fn);
		return r;
	}
	else {
		elm['on' + evType] = fn;
	}
}

function $(){
	var elements = new Array();
	for(var i = 0; i < arguments.length; i++){
		var element = arguments[i];
		if(typeof element == 'string')
			element = document.getElementById(element);
		if(arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

/*
    Written by Jonathan Snook, http://www.snook.ca/jonathan
    Add-ons by Robert Nyman, http://www.robertnyman.com
*/

function getElementsByClassName(oElm, strTagName, strClassName){
    var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for(var i=0; i<arrElements.length; i++){
        oElement = arrElements[i];      
        if(oRegExp.test(oElement.className)){
            arrReturnElements.push(oElement);
        }   
    }
    return (arrReturnElements)
}

function popup(url, winName, width1, height1){
	var width1, height1;
	var features='toolbar=no,close=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,status=no,width='+width1+',height='+height1+',left=400,top=200';
	window.open(url, winName, features);
}