/*Object.prototype.attachEvent = function (sEvent, fnHandler, bUseCapture) {
    this.addEventListener(sEvent.indexOf('on') == 0 ? sEvent.replace('on', '') : sEvent, fnHandler, bUseCapture);
}
*/
function listen(node, event, func) {
	if (node.addEventListener) node.addEventListener(event, func, false);
	else node.attachEvent('on'+event, func);
};

if(document.getElementsByClassName == undefined) {
	document.getElementsByClassName = function(cl) {
		var retnode = [];
		var myclass = new RegExp('\\b'+cl+'\\b');
		var elem = this.getElementsByTagName('*');
		for (var i = 0; i < elem.length; i++) {
			var classes = elem[i].className;
			if (myclass.test(classes)) {
			retnode.push(elem[i]);
			}
		}
		return retnode;
	}
};
var ua = navigator.userAgent.toLowerCase();
var isIE = (ua.indexOf("msie") != -1 && ua.indexOf("opera") == -1 && ua.indexOf("webtv") == -1); 
var isChrome = ua.indexOf("chrome") != -1;	
 /*if( typeof document.getElementsByClassName != 'function' ) {
        document.getElementsByClassName = Object.getElementsByClassName = function (className) {
            if( !className )
                return [];
            var elements = this.getElementsByTagName('*');
            var list = [];
            var expr = new RegExp( '(^|\\b)' + className + '(\\b|$)' );
            for (var i = 0, length = elements.length; i<length; i++)
                if (expr.test(elements[i].className))
                    list.push(elements[i]);
            return list;
        };
    }*/