function chmail(){
if((document.mail.name.value=="")||(document.mail.email.value=="")||(document.mail.question.value=="")||(document.mail.packagecode.value=="")){
 alert("Please fill in your information!");
 return false;
}
var mailaddr=document.mail.email.value;
if((mailaddr.indexOf("@")==-1)||(mailaddr.indexOf(".")==-1)||(mailaddr.indexOf("@")==0)||(mailaddr.indexOf(".")==0)||(mailaddr.lastIndexOf("@")==mailaddr.length-1)||(mailaddr.lastIndexOf(".")==mailaddr.length-1)){
 alert("Please input correct mail address!");
 return false;
}
}

function ch(){
	if((document.addnew.name.value=="")||(document.addnew.email.value=="")||(document.addnew.groupcode.value=="")||(document.addnew.memo.value=="")){
		alert("请输入必填项目！");
		return false;
		}
	}

function chradio(){
	if(document.ok.mark.checked==false){
		alert("此团是否成行？请你选择成行标记！");
		return false;
		}
	if(document.ok.revenue1.value==""){
		alert("请输入预计的收入金额！");
		return false;
		}
	}
	
function chkk(){
	var x=document.getElementsByName("mark");
	var flag=0;
	for(var i=0;i<x.length;i++){
		if(x[i].checked){
             flag=1;
			 break;
			}
		}
	if(flag==0){
		alert("请选择邮件标记！");
		return false;
		}
	else{return true;}
	}