<!--//
function checksignup6() {
var  r1, r2, r3
r1 = new RegExp('[^A-Za-z0-9_]','');
r2 = new RegExp('[^A-Za-z0-9]','');
r3 = new RegExp('[^0-9]','');
if ( document.formSignUp.p_user.value == '' ) {
window.alert('请输入用户名!!');
document.formSignUp.p_user.focus();
return false;
}

else if ( document.formSignUp.p_pass.value == '' ) {
window.alert('请输入密码!!');
document.formSignUp.p_pass.focus();
return false;
}

return true;
}