function search_div() {
var search_term = $('search_term').value;
var search_area = $('search_area').value;
var ParamString = "search_term=" + search_term + "&search_area=" + search_area;
new Ajax.Updater('search_results', 'http://www.daremedy.com/ajax/search.php', {parameters : ParamString, method: 'post', asynchronous: 'true', evalScripts: 'true'} );  
}