E-mail校验

if(document.form1.Email.value!=""){

 var objv = document.form1.Email.value;

var pattern = /[^@]+@([a-zA-Z0-9-]+.)+([a-zA-Z0-9-]{2}|net|com|gov|mil|org|edu|int)$/;

flag=pattern.test(objv);

if(!flag)

{

alert( "请留下正确的Email地址！");

document.form1.Email.focus();

return false;

 }