function createXMLHttpRequest(b){var a=null;try{a=new XMLHttpRequest()}catch(c){try{a=new ActiveXObject("Msxml2.XMLHTTP")}catch(c){try{a=new ActiveXObject("Microsoft.XMLHTTP")}catch(c){return null}}}if(a){a.onreadystatechange=b}return a}function $(a){return document.getElementById(a)};
