//E-mail格式校验
function chkMail(ctlID) {
    if(document.getElementById(ctlID).value.indexOf("@")<=0) {
        alert("请输入正确的Email地址！");
		document.getElementById(ctlID).focus();
        return true;
    } else if(document.getElementById(ctlID).value.lastIndexOf("@")==(document.getElementById(ctlID).value.length-1)) {
        alert("请输入正确的Email地址！");
		document.getElementById(ctlID).focus();
        return true;
    } else if(document.getElementById(ctlID).value.indexOf(".")<=0) {
        alert("请输入正确的Email地址！");
		document.getElementById(ctlID).focus();
        return true;
    } else if(document.getElementById(ctlID).value.lastIndexOf(".")==(document.getElementById(ctlID).value.length-1)) {
        alert("请输入正确的Email地址！");
		document.getElementById(ctlID).focus();
        return true;
    } else if(checkChinese(document.getElementById(ctlID).value)==1) {
        alert("email地址不能包含中文！");
		document.getElementById(ctlID).focus();
        return true;
    } else {
		return false;
    }
}