function validate() {
mNv=mainform.telephone.value;
if (mNv=='') {
alert('Please leave your telephone number so we can get back to you.');
event.returnValue=false;}
{
mNv=mainform.email.value;
if (mNv=='') {
alert('Please tell us your email address so we can reply.');
event.returnValue=false;


}


{
mNv=mainform.realname.value;
if (mNv=='') {
alert('Please tell us your name so we can reply.');
event.returnValue=false;


}

{
mNv=mainform.arrival.value;
if (mNv=='') {
alert('Please tell when you wish to arrive.');
event.returnValue=false;

}
}


{
mNv=mainform.depart.value;
if (mNv=='') {
alert('Please tell when you wish to depart.');
event.returnValue=false;

}
}


}


}




}