//校验电话
function isTel(s)
{
    var patrn=/^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;
    return patrn.test(s);
}

function isValidEmail(s)
{
    var patrn=/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
    return patrn.test(s);
}

function isInt(s)
{
    var patrn=/^[-\+]?\d+$/;
    return patrn.test(s); 
}