function drop_ip(){ 
var postStr = ""; 
$.ajax(
	{
	type: "POST",
	contentType:"application/x-www-form-urlencoded",
	url: "/common/drop_ip.asp", 
	data: postStr,
	error: function(){ 
		alert('您所请求的页面有异常，请刷新重试。'); 
		},
	success: function(msg){  
		     if(msg!=""){
		      window.location.href='http://www.vobao.com/'
		     }
			} 
	}); 
}
setTimeout("drop_ip()", 3000);