//Event.observe(window, 'load', searchBoxHandler);

function searchBoxHandler(){
	Event.stopObserving(window, 'load', searchBoxHandler);

	$('searchBoxBrand').observe('change', brandChange);

	$('searchBoxString').observe('focus', stringFocus);
	$('searchBoxString').observe('blur', stringBlur);
}

function brandChange(event){
	var element = Event.element(event);
	element.up().submit();
}

function stringFocus(event){
	var element = Event.element(event);
	if(element.value == 'Mots clés')
		element.value = '';
}

function stringBlur(event){
	var element = Event.element(event);
	if(element.value == '')
		element.value = 'Mots clés';
}