eirikbacker

.search-submit { /* Single element search icon, no pseudo elements */
  width: 15px;
  height: 15px;
  border: 2px solid; /* Not specifying color means border + box-shaddow gets currentColor (font color) */
  border-radius: 100%;
  box-shadow: 6px 6px 0 -6px, 7px 7px 0 -6px;
  background: none;
  color: inherit;
  font-size: 0; /* Hide text */
  padding: 0;

eirikbacker

//addEventListener polyfill 1.0 / Eirik Backer / MIT Licence
(function(win, doc){
	if(win.addEventListener)return;		//No need to polyfill

	function docHijack(p){var old = doc[p];doc[p] = function(v){return addListen(old(v))}}
	function addEvent(on, fn, self){
		return (self = this).attachEvent('on' + on, function(e){
			var e = e || win.event;
			e.preventDefault  = e.preventDefault  || function(){e.returnValue = false}
			e.stopPropagation = e.stopPropagation || function(){e.cancelBubble = true}