// JavaScript Document
function CheckInput(){
var phone=document.form.cphone.value;
var patternphone=/^[0-9]{7,12}$/;
flagphone=patternphone.test(phone);

var email=document.form.cemail.value;
var patternmail=/^([a-zA-Z0-9])+@([a-zA-Z0-9])+\.([a-zA-Z0-9])+/;
flagmail=patternmail.test(email);

        if(form.name.value==''){
                alert("请输入您的姓名！");
                form.name.focus();
                return false;
        }	

if(!flagmail) {

alert("请输入正确的电子邮件地址！！");
document.form.cemail.focus();
return false;

}
        if(form.content.value==''){
                alert("请填写内容！");
                form.content.focus();
                return false;
        }


        return true;
}