autofocus for old browser

autofocus.html

<input type="text" id="search" name="" autofocus>
 
<script type="text/javascript">
(function(inputField){
	// typeof inputField.autofocus === 'boolean'
	// or !inputField.autofocus
	if(inputField.autofocus !== true){
		inputField.focus();
	}
})(document.getElementById('search'));
</script>