function execSearch (){
				var url = "check_d_ajax.php";
				var P_params = Form.serialize('s_d');
				Ajax.Responders.register({ 
						onCreate: showLoading
					});
					
				var ajax = new Ajax.Request(url, {
								method: 'post', 
								parameters: P_params,
								onComplete: procesaRespuesta,
								onFailure: getErrorreport
								}
							);
			}
			
			function procesaRespuesta(resp){
				if (resp.responseText == 'no') {
					$('result_w').innerHTML = "<span style=\"color: red; font-weight:bold;\">Dominio NO DISPONIBLE</span>";
				}else{
					$('s_d').action = "dominios.php";
					$('a_p').value = "1";
					$('s_d').submit();
				}
			}			

			function showLoading(){
				$('result_w').innerHTML = "Buscando...";
			}			
						
			function getErrorreport(request){//error ajax
				alert('Sorry. There was an Ajax error!.'+request);
			}