I am having some trouble figuring out how to validate my textboxes using js. I have 10 textboxes, the user can fill out any number 1-10, but cant fill out 0. Here is the js that I have written, but it only returns true if all 10 textboxes are filled, rather than just checking if one is filled.

    function submitIt() {

    if (document.isForm.Student_ID.value == null) {

        alert (You must enter a Colleague ID.);

        return false;

    } else {

        return true;

    }

}

And here is the form.....

<form name=isForm onSubmit=return submitIt()>

    <input name=Student_ID type=text id=idField1 />

    <input name=Student_ID type=text id=idField2 />

    <input name=Student_ID type=text id=idField3 />

    <input name=Student_ID type=text id=idField4 />

    <input name=Student_ID type=text id=idField5 />

    <input name=Student_ID type=text id=idField6 />

    <input name=Student_ID type=text id=idField7 />

    <input name=Student_ID type=text id=idField8 />

    <input name=Student_ID type=text id=idField9 />

    <input name=Student_ID type=text id=idField10 />

    <input name=SUBMIT type=submit />

</form>

I realize that I could change all of the names, and check each one, but I am trying to avoid that much clutter in my code, and am curious the best way to do this. Any help is appreciated, thanks!