var xmlHttp;function createXMLHttpRequest(){try{if(window.ActiveXObject){xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");}else if(window.XMLHttpRequest){xmlHttp=new XMLHttpRequest();}}catch(e){alert("您的浏览器太老了,不支持AJAX");return;}}function requestFun(url,str,meth,fun){var meth=meth.toUpperCase();var data=null;createXMLHttpRequest();if(meth=="GET"){url+="?"+str}else{data=str;}xmlHttp.onreadystatechange=eval(fun);xmlHttp.open(meth,url);xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");xmlHttp.send(data);}