(function() {
// private constructor
function _$(els) {
this.elements = [];
for (var i=0; i<els.length;>
var element = els[i];
if (typeof element == 'string') {
element = document.getElementById(element);
}
this.elements.push(element);
}
return this;
}
 
 
_$.prototype = {
each: function(fn) {
for ( var i = 0, len = this.elements.length; i<len;>
fn.call(this, this.elements[i]);
}
return this;
},
setStyle: function(prop, val) {
this.each(function(el) {
el.style[prop] = val;
});
return this;
},
addClass: function(className) {
this.each(function(el) {
el.className += �? �?+className;
});
return this;
},
on: function(type, fn) {
var listen = function(el) {
if (window.addEventListener) {
el.addEventListener(type, fn, false);
} else if (window.attachEvent) {
el.attachEvent(’on’+type, function() {
fn.call(el, window.event);
});
}
};
this.each(function(el) {
listen(el);
});
return this;
},
css: function(o) {
var that = this;
this.each(function(el) {
for (var prop in o) {
console.log(prop);
that.setStyle(prop, o[prop]);
}
});
return this;
}
};
window.$ = function() {
return new _$(arguments);
}
})();