html - Form onsubmit issue with javascript -

ok confused on whole javascript in html stuff. trying validate form either "onblur" or on submit external file.

here html code works first field:

    <script>     function notempty(rep, errmsg)     {     var errmsg = "please enter in rep";     var rep = document.getelementbyid('submitted_by_hrrep');     if(rep.value == '')     {     alert(errmsg);     hrrep.focus();     return false;     }     return true;     }     </script> 

this in body of form near field.

<script type="text/javascript">document.getelementbyid("submitted_by_rep").onblur=notempty;</script> 

so work , pop alert tells em go can't work doing rest (15 fields) of form. "onsubmit" confusing me , think it's right not sure.

<form onsubmit="return formvalidation()" method="post" action="process.asp" > 

anything help

edit

    function validate()     {     if(document.newemprequest.submitted_by_hrrep.value ==='')     {     alert("please provide name");     document.newemprequest.submitted_by_hrrep.focus();     return false;     } 

i got frustrated started scratch , took field @ time. found works fields need text, looks messy file calling externally works flawlessly.

i wish use jquery seems more complex setup need. :)

you have grab inputs iterate on them loop of flavor, maybe loop?

with jquery it's easy since there form validator plugins out there, , selectors friendly. using jquery,

$('#formid input')  

would grab inputs in form, can use .each() iterate through inputs

you aren't going able .focus() on of fields though, need function handle entire list instead of one.