var xmlHttp

//获得checkbox值,用+间隔
function get_array_value(a)
{
	var r=document.getElementsByName(a);
	var b = '';
	for(i=0;i<r.length;i++)
	{
		if(r[i].checked){
			var c = r[i].value;
			b = b + c + '+';
		}
	}
	return b;
}

//ajax传递id值
function makeVote(para, type)
{
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	}
	var url="/html/ajax_2.php"
	url=url+"?p="+para+"&t="+type
	xmlHttp.onreadystatechange=onReady
	xmlHttp.open("GET",url,true)
	xmlHttp.setRequestHeader("If-Modified-Since","0")
	xmlHttp.send(null)
}

//得到返回结果,并显示
function onReady(){
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		var result = xmlHttp.responseText.split(","); 
		var text = result[0];
		var id = result[1];
		switch(text){
			case "1":
				document.getElementById("star_btn").disabled = true;
				document.getElementById("star_btn").src = "/images/btn_tp_b.jpg";
				alert('非常感谢您的投票!');
				break;
			case "2":
				document.getElementById(id).disabled = true;
				document.getElementById(id).src = "/images/btn_wwtp_b.jpg";
				$('#returnbox').trigger('click');
				break;
			case "3":
				alert('请您选择您所喜欢的明星.');
				break;
			case "4":
				document.getElementById("star_btn").disabled = true;
				document.getElementById("star_btn").src = "/images/btn_tp_b.jpg";
				alert('对不起,您今天已经达到投票上限!');
				break;
			case "5":
				document.getElementById(id).disabled = true;
				document.getElementById(id).src = "/images/btn_wwtp_b.jpg";
				alert('对不起,您今天已经达到投票上限!');
				break;
			case "6":
				alert('最多只可以选择五位明星!');
				break;
			case "7":
				document.getElementById(id).disabled = true;
				document.getElementById(id).src = "/images/btn_wwtp_b.jpg";
				alert('对不起，投票已截止！谢谢您的参与！');
				break;
			case "8":
				document.getElementById(id).disabled = true;
				document.getElementById(id).src = "/images/btn_wwtp_b.jpg";
				alert('对不起,现在只能给二十强进行投票!');
				break;
			default:
				alert('对不起,投票有错误!');
				break;
		}
	}
}

function GetXmlHttpObject()
{
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}