function check_input() {
	if($F('search_word_val').length >= 3) {
	var url = 'includes/wiki_search_suggestions.php';
	var params = 'search_word_val=' + $F('search_word_val');
	var ajax = new Ajax.Updater(
		
		{success: 'search_suggestions'},
		url,
		{method: 'get', parameters: params, onFailure: reportError});
		
		}
		$("wiki_help").innerHTML = '';
		$("wiki_loading").innerHTML = '<img src="images/loading.gif" alt="Loading..."/>';
 	
 		setTimeout("$('wiki_loading').innerHTML = ''", 1000);

 	}
	
	function reportError(request) {
		$F('search_suggestions') = "Error";
	}