function browser_is_IE(){if(navigator.userAgent.indexOf("MSIE")>=0){return true}return false}function browser_is_mozilla(){if(navigator.userAgent.indexOf("Mozilla")>=0){return true}return false}function ajax_request(ajax_target_url,ajax_return_handler,ajax_async){var a_xml_http=null;if(navigator.userAgent.indexOf("MSIE")>=0){var str_xml_http_type='';str_xml_http_type="Msxml2.XMLHTTP";if(navigator.userAgent.indexOf("MSIE 5.5")>=0)str_xml_http_type="Microsoft.XMLHTTP";try{a_xml_http=new ActiveXObject(str_xml_http_type);a_xml_http.onreadystatechange=ajax_return_handler}catch(e){alert("Error. Scripting for ActiveX unavailable.")}}else if(navigator.userAgent.indexOf("Mozilla")>=0){a_xml_http=new XMLHttpRequest();a_xml_http.onload=ajax_return_handler;a_xml_http.onerror=ajax_return_handler}if(ajax_async=='false'){ajax_async=false}else{ajax_async=true}if(a_xml_http){a_xml_http.open("GET",ajax_target_url,ajax_async);a_xml_http.send(null);return a_xml_http}return null}function ajax_is_complete(a_xml_http){if(a_xml_http){if(a_xml_http.readyState){if((a_xml_http.readyState==4)||(a_xml_http.readyState=="Complete")){return true}}}return false}