// JavaScript Document
function checkForm(){
thisForm=document.myform;
if(thisForm.username.value==""){
alert("名字不能为空");
thisForm.username.focus();
return false;
}
if(thisForm.tel.value==""){
alert("电话不能为空");
thisForm.tel.focus();
return false;
}
if(thisForm.email.value==""){
alert("邮件不能为空");
thisForm.email.focus();
return false;
}
if(thisForm.email.value.indexOf('@')==-1||thisForm.email.value.indexOf('.')==-1){
alert("邮件地址不正确");
thisForm.email.select();
return false;
}
if(thisForm.company.value==""){
alert("公司名称不能为空");
thisForm.company.focus();
return false;
}
if(thisForm.address.value==""){
alert("公司地址不能为空");
thisForm.address.focus();
return false;
}

return true;


}