function send_post(url) {
	var res;
	try {
			try { 
				  ajXmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); 
				 // alert('Msxml2.XMLHTTP')
			} catch (e) { 
				 try { 
					 ajXmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 
					 // alert('Microsoft.XMLHTTP')
				 } catch (e) { 
					ajXmlHttp = new XMLHttpRequest();
				 }		 
			}
		//alert(ajXmlHttp)
		   ajXmlHttp.Open("post", url, false);
		   ajXmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;");
		   ajXmlHttp.Send(null);
		   res = ajXmlHttp.responseText;
	} catch(e) {
		alert("连接服务器异常：\n"+e.name+"\n"+e.message);
		res="连接服务器异常";
	}	
	return res;
}