function validateContactForm()
{
var error="";
var nr = document.contactform.phone.value;

if(document.contactform.subject.value=="") error+='Please enter your email subject!\n';
if(document.contactform.mesaj.value=="") error+='Please enter your message!\n';
if(document.contactform.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=="";
}