function search_toggle() {
	if (!document.getElementById('s')) return false;

	var search_field = document.getElementById('s');
	var original_value = search_field.value;

  var search_form = search_field.parentNode;

	var search_go = document.getElementById('searchsubmit');
	var original_src = search_go.src;

	search_field.onfocus = function() {
		if (this.value == original_value) {
		  this.value = '';
		  search_form.className = 'selected';
		  search_go.src = original_src.replace(/search_go/, 'search_go_selected');
		}
	}
	search_field.onblur = function() {
		if (this.value == '') {
		  this.value = original_value;
		  search_form.className = '';
		  search_go.src = original_src;
		}
	}
}

addDOMLoadEvent(search_toggle);