function initSearch() {
	//init autocompleter
	new AutocompletePrototype('searchStr', {
		serviceUrl:'/ajax/search.php',
		minChars: 3,
		maxHeight: 300,
		width: 300,
		deferRequestBy: 100,
		// callback function:
		onSelect: function(value, data){
			$('searchData').value = data;
			$('searchForm').submit();
		}
	});
}

function checkSearchStr() {
	if($('searchStr').value == '' || $('searchStr').value == 'Suche...') {
		return false;
	}
}

function enableSearchField(obj) {
	if($(obj).value == 'Suche...') {
		$(obj).value = '';
		$(obj).setStyle({'color' : '#000'});
	}
}

function disableSearchField(obj) {
	if($(obj).value == '') {
		$(obj).value = 'Suche...';
		$(obj).setStyle({'color' : '#888'});
	}
}