function validateContactForm(object) { var error=""; var nr = object.phone.value; if(object.subject.value=="") error+='Please enter your email subject!!\n'; if(object.mesaj.value=="") error+='Please enter your message!!\n'; if(object.emailad.value.indexOf("@")==-1) error+='The e-mail address is incorrect!!!\n'; // if(isNaN(nr)) error+='Your phone number is incorect!!!\n'; if (error!="") alert(error); return error==""; }