function checkform() {

if (
document.signup.fullname.value == '' || 
document.signup.email.value == '' || 
document.signup.telephone.value == ''
) {
alert("Please supply your full name, email address and telephone number.");
return false;
}

if (
document.signup.address1.value == '' || 
document.signup.city.value == '' || 
document.signup.state.value == '' || 
document.signup.postcode.value == '' || 
document.signup.country.value == ''
) {
alert("Please supply your full address.");
return false;
}

if (
document.signup.doby.selectedIndex == 0 || 
document.signup.dobm.selectedIndex == 0 || 
document.signup.dobd.selectedIndex == 0 || 
document.signup.height_feet.selectedIndex == 0 || 
document.signup.height_inches.selectedIndex == 0 || 
document.signup.weight.selectedIndex == 0 || 
document.signup.eyes.selectedIndex == 0 || 
document.signup.hair.selectedIndex == 0 || 
document.signup.education.selectedIndex == 0 || 
document.signup.religion.selectedIndex == 0 || 
document.signup.marital.selectedIndex == 0
) {
alert("Please supply your personal details.");
return false;
}

if (
document.signup.userfile.value == ''
) {
alert("Please supply a photo of yourself!");
return false;
}

if (
document.signup.newusername.value == ''
) {
alert("Please supply a username!");
return false;
}

if (
document.signup.password1.value == '' || document.signup.password2.value == ''
) {
alert("Please supply a password!");
return false;
}

if (
document.signup.password2.value != document.signup.password1.value
) {
alert("The second password you entered does not match the first. Please try again.");
return false;
}

}