you have code that refersd to the JQuery object that comes before the line where you attach jquery
<script language="JavaScript">
jQuery.browser.version = jQuery.browser.msie &&
parseInt(jQuery.browser.version) >= 6 &&
window["XMLHttpRequest"] ?
"7.0" :
jQuery.browser.version;
</script>
<script language="JavaScript">
jQuery.browser.msie6 = jQuery.browser.msie &&
parseInt(jQuery.browser.version) == 6 &&
!window["XMLHttpRequest"];
</script>
<script src="js/jquery-2.0.3.min.js"></script>
the js/jquery-2.0.3.min.js file needs to be attached before it is used in the code.