Tabbing through a Form

Hi,

I have a form which I have been scripting for validation , however I am unable to tab to any of the fields , I can only get to the next field by validating it.

Below is a snippet of the code.........

function validForm(myForm) {
var validChars=/^\s*([a-zA-Z]\s*)+$/;
re = /^\s*([a-zA-Z]\s*)+$/;
validChars=re.exec(myForm.fname.value)
if(!validChars) { alert("You must enter a valid Firstname");
myForm.fname.focus();
return false;
}

var validChars=/^\s*([a-zA-Z]\s*)+$/;
re = /^\s*([a-zA-Z]\s*)+$/;
validChars=re.exec(myForm.sname.value)
if(!validChars) { alert("You must enter a valid Surname");
myForm.sname.focus();
return false;
}

if (myForm.address.value == "") {
alert("You must enter your Address details");
myForm.address.focus();
return false;
}


and so on............