You have embedded your script blocks inside a style block:
<style type="text/css">
body {
background-color: #F7A700;
}
-->
<script src="jquery-1.3.2.min.js" type="text/javascript" charset"utf-8"></script>
<script src="jquery.curvycorners.min.js" type="text/javascript" charset"utf-8"></script>
<script type="text/javascript">
$(document).ready(function(){
$('.sidebarcontainer').css({background: '#3f3f3f'}).corner('round 8px')
});
</script>
</style>
It should look like this:
<style type="text/css">
body {
background-color: #F7A700;
}
</style>
<script src="jquery-1.3.2.min.js" type="text/javascript" charset"utf-8"></script>
<script src="jquery.curvycorners.min.js" type="text/javascript" charset"utf-8"></script>
<script type="text/javascript">
$(document).ready(function(){
$('.sidebarcontainer').css({background: '#3f3f3f'}).corner('round 8px')
});
</script>