function checkMobile(s) {
 var field13 = /^13\d{9}$/g;
 var field15 = /^15\d{9}$/g;
 var field18 = /^18\d{9}$/g;
 if ((field13.exec(s)) || (field15.exec(s)) || (field18.exec(s)))
 { window.open('http://sms.chem99.com/?mobile=' + s + '&&source=6&&sourcesite=5'); } 
 else { alert('请输入正确的手机号码') }
}