function checkForm(){
				var num = 1;
				var regEmail = /^([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+@([a-zA-Z0-9]+[_|\_|\.]?)*[a-zA-Z0-9]+\.[a-zA-Z]{2,3}$/; //email
				var regMobile = /^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$/; //手机号
				var regPhone1 = /^0[0-9]{2,3}$/; //电话号码区号
				var regPhone2 = /^[2-9][0-9]{6,7}$/; //电话号码
				var regPhone3 = /^[0-9]{1,4}$/; // 分机号
				var reEmail = new RegExp(regEmail);
				var reMobile = new RegExp(regMobile);
				var rePhone1 = new RegExp(regPhone1);
				var rePhone2 = new RegExp(regPhone2);
				var rePhone3 = new RegExp(regPhone3);
				var fromcity = jQuery.trim(jQuery("#dCity").val());
				var tocity = jQuery.trim(jQuery("#aCity1").val());
				var date1 = jQuery.trim(jQuery("#date1").val());
				var name = jQuery.trim(jQuery("#contactorName").val());
				var mobile = jQuery.trim(jQuery("#mobile").val());
				var email = jQuery.trim(jQuery("#email").val());
				var aphone1 = jQuery.trim(jQuery("#aphone1").val());
				var aphone2 = jQuery.trim(jQuery("#aphone2").val());
				var aphone3 = jQuery.trim(jQuery("#aphone3").val());
				jQuery(".linkMethod").each(function(){
					var flag = jQuery(this).attr("checked");
					if(flag){
						num = jQuery(this).val();
					}
				});
				if(!fromcity){
					jQuery("#dCitySpan").html("出发城市不能为空").css("display", "inline");
					return false;
				}
				if(!tocity){
					jQuery("#aaa").html("目的城市1不能为空").css("display", "inline");
					return false;
				}
				if(!date1){
					jQuery("#date1Span").html("出发日期1不能为空").css("display", "inline");
					return false;
				}
				if(!name){
					jQuery("#nameSpan").html("联系人不能为空").css("display", "inline");
					return false;
				}
				if(!mobile){
					jQuery("#mobileSpan").html("手机号不能为空").css("display", "inline");
					return false;
				}
				if (num == 3 && !reEmail.test(email)) {
					jQuery("#emailSpan").html("请输入正确的邮件格式：xxx@xxx.xxx").css("display", "inline");
					return false;
				}
				return true;
	}
	function hiddenErrorSpan() {
		jQuery(".errorspan").each(function () {
			jQuery(this).css("display", "none");
		});
	}