function sf_validation(form) {
var legalchars = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
if(form.email.value == '') {
alert('Please enter your email address');
form.email.focus();
return false;
}
if(form.email.value == 'enter email address') {
alert('Please enter your email address');
form.email.focus();
return false;
}
if(legalchars.test(form.email.value) == false) {
alert('Please enter a valid email address');
form.email.focus();
return false;
}
return true;
}