$('search_choice').onchange = function() {
						$('search').action = this.value;
						if(this.value == '%pre_lang%/search/search_do/'){
								   
							$('search_field').name = 'search_string';
								   
						}
						if(this.value == '/results/'){
								   
							$('search_field').name = 'fields_filter[title]';
								   
						}
								  
					}